Index: Core/Gui/src/Core.Gui/Forms/Backstage/BackstageControl.xaml
===================================================================
diff -u -r67e75d6b994d88945388dac0beb19261accfd971 -rb641495492850378ead7ce56a66c4b52c6e6041e
--- Core/Gui/src/Core.Gui/Forms/Backstage/BackstageControl.xaml	(.../BackstageControl.xaml)	(revision 67e75d6b994d88945388dac0beb19261accfd971)
+++ Core/Gui/src/Core.Gui/Forms/Backstage/BackstageControl.xaml	(.../BackstageControl.xaml)	(revision b641495492850378ead7ce56a66c4b52c6e6041e)
@@ -131,13 +131,12 @@
             <DataTemplate DataType="{x:Type backstage:InfoViewModel}">
                 <backstage:InfoBackstagePage />
             </DataTemplate>
-            <DataTemplate DataType="{x:Type backstage:OpenViewModel}">
-                <TextBlock FontSize="35">Open</TextBlock>
-            </DataTemplate>
             <DataTemplate DataType="{x:Type backstage:AboutViewModel}">
                 <backstage:AboutBackstagePage />
             </DataTemplate>
-            
+            <DataTemplate DataType="{x:Type backstage:SupportViewModel}">
+                <TextBlock FontSize="35">Support</TextBlock>
+            </DataTemplate>
         </ResourceDictionary>
     </UserControl.Resources>
 
@@ -191,6 +190,12 @@
                         Content="{x:Static properties:Resources.ShowManual_DisplayName}"
                         Command="{x:Static commands:MainWindowCommands.OpenUserManualCommand}" />
                 
+                <controls:OneWayToggleButton Style="{StaticResource BackstageToggleButtonStyle}"
+                                             Content="{x:Static properties:Resources.Support_DisplayName}"
+                                             Command="{Binding SetSelectedViewModelCommand}"
+                                             CommandParameter="{Binding SupportViewModel}"
+                                             IsChecked="{Binding SupportSelected, Mode=OneWay}" />
+                
                 <Separator Style="{StaticResource BackstageSeparatorStyle}" />
                 
                 <Button Style="{StaticResource BackstageButtonStyle}"
Index: Core/Gui/src/Core.Gui/Forms/Backstage/BackstageViewModel.cs
===================================================================
diff -u -r7ed9edfa97f83402ba56d518da451e56f0cdccf6 -rb641495492850378ead7ce56a66c4b52c6e6041e
--- Core/Gui/src/Core.Gui/Forms/Backstage/BackstageViewModel.cs	(.../BackstageViewModel.cs)	(revision 7ed9edfa97f83402ba56d518da451e56f0cdccf6)
+++ Core/Gui/src/Core.Gui/Forms/Backstage/BackstageViewModel.cs	(.../BackstageViewModel.cs)	(revision b641495492850378ead7ce56a66c4b52c6e6041e)
@@ -33,9 +33,9 @@
     {
         private IBackstagePageViewModel selectedViewModel;
         private bool infoSelected;
-        private bool openSelected;
+        private bool supportSelected;
         private bool aboutSelected;
-        
+
         public event PropertyChangedEventHandler PropertyChanged;
 
         /// <summary>
@@ -44,8 +44,8 @@
         public BackstageViewModel()
         {
             InfoViewModel = new InfoViewModel();
-            OpenViewModel = new OpenViewModel();
             AboutViewModel = new AboutViewModel();
+            SupportViewModel = new SupportViewModel();
 
             SetSelectedViewModelCommand = new RelayCommand(OnSetCurrentViewModel);
 
@@ -56,23 +56,23 @@
         /// Gets the command to set the selected view model.
         /// </summary>
         public ICommand SetSelectedViewModelCommand { get; }
-        
+
         /// <summary>
         /// Gets the <see cref="InfoViewModel"/>.
         /// </summary>
         public InfoViewModel InfoViewModel { get; }
-        
+
         /// <summary>
-        /// Gets the <see cref="OpenViewModel"/>.
-        /// </summary>
-        public OpenViewModel OpenViewModel { get; }
-        
-        /// <summary>
         /// Gets the <see cref="AboutViewModel"/>.
         /// </summary>
         public AboutViewModel AboutViewModel { get; }
 
         /// <summary>
+        /// Gets the <see cref="SupportViewModel"/>.
+        /// </summary>
+        public SupportViewModel SupportViewModel { get; }
+
+        /// <summary>
         /// Gets or sets the selected view model.
         /// </summary>
         public IBackstagePageViewModel SelectedViewModel
@@ -107,30 +107,30 @@
         }
 
         /// <summary>
-        /// Gets an indicator whether the <see cref="OpenViewModel"/>
+        /// Gets an indicator whether the <see cref="AboutViewModel"/>
         /// is selected.
         /// </summary>
-        public bool OpenSelected
+        public bool AboutSelected
         {
-            get => openSelected;
+            get => aboutSelected;
             private set
             {
-                openSelected = value;
-                OnPropertyChanged(nameof(OpenSelected));
+                aboutSelected = value;
+                OnPropertyChanged(nameof(AboutSelected));
             }
         }
 
         /// <summary>
-        /// Gets an indicator whether the <see cref="AboutViewModel"/>
+        /// Gets an indicator whether the <see cref="SupportViewModel"/>
         /// is selected.
         /// </summary>
-        public bool AboutSelected
+        public bool SupportSelected
         {
-            get => aboutSelected;
+            get => supportSelected;
             private set
             {
-                aboutSelected = value;
-                OnPropertyChanged(nameof(AboutSelected));
+                supportSelected = value;
+                OnPropertyChanged(nameof(SupportSelected));
             }
         }
 
@@ -142,8 +142,8 @@
         private void SetButtonStates()
         {
             InfoSelected = selectedViewModel is InfoViewModel;
-            OpenSelected = selectedViewModel is OpenViewModel;
             AboutSelected = selectedViewModel is AboutViewModel;
+            SupportSelected = selectedViewModel is SupportViewModel;
         }
 
         private void OnSetCurrentViewModel(object obj)
Fisheye: Tag b641495492850378ead7ce56a66c4b52c6e6041e refers to a dead (removed) revision in file `Core/Gui/src/Core.Gui/Forms/Backstage/OpenViewModel.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Core/Gui/src/Core.Gui/Forms/Backstage/SupportViewModel.cs
===================================================================
diff -u
--- Core/Gui/src/Core.Gui/Forms/Backstage/SupportViewModel.cs	(revision 0)
+++ Core/Gui/src/Core.Gui/Forms/Backstage/SupportViewModel.cs	(revision b641495492850378ead7ce56a66c4b52c6e6041e)
@@ -0,0 +1,25 @@
+// Copyright (C) Stichting Deltares 2021. All rights reserved.
+//
+// This file is part of Riskeer.
+//
+// Riskeer is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+namespace Core.Gui.Forms.Backstage
+{
+    public class SupportViewModel : IBackstagePageViewModel {}
+}
\ No newline at end of file
Index: Core/Gui/src/Core.Gui/Properties/Resources.Designer.cs
===================================================================
diff -u -r44a1619c9ffc6d60995d5ee42702271be0064727 -rb641495492850378ead7ce56a66c4b52c6e6041e
--- Core/Gui/src/Core.Gui/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 44a1619c9ffc6d60995d5ee42702271be0064727)
+++ Core/Gui/src/Core.Gui/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision b641495492850378ead7ce56a66c4b52c6e6041e)
@@ -2496,6 +2496,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Support.
+        /// </summary>
+        public static string Support_DisplayName {
+            get {
+                return ResourceManager.GetString("Support_DisplayName", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to &amp;Bijwerken....
         /// </summary>
         public static string Update {
Index: Core/Gui/src/Core.Gui/Properties/Resources.resx
===================================================================
diff -u -r44a1619c9ffc6d60995d5ee42702271be0064727 -rb641495492850378ead7ce56a66c4b52c6e6041e
--- Core/Gui/src/Core.Gui/Properties/Resources.resx	(.../Resources.resx)	(revision 44a1619c9ffc6d60995d5ee42702271be0064727)
+++ Core/Gui/src/Core.Gui/Properties/Resources.resx	(.../Resources.resx)	(revision b641495492850378ead7ce56a66c4b52c6e6041e)
@@ -943,4 +943,7 @@
   <data name="ShowManual_DisplayName" xml:space="preserve">
     <value>Handleiding</value>
   </data>
+  <data name="Support_DisplayName" xml:space="preserve">
+    <value>Support</value>
+  </data>
 </root>
\ No newline at end of file
Index: Core/Gui/test/Core.Gui.Test/Forms/Backstage/BackstageViewModelTest.cs
===================================================================
diff -u -r7ed9edfa97f83402ba56d518da451e56f0cdccf6 -rb641495492850378ead7ce56a66c4b52c6e6041e
--- Core/Gui/test/Core.Gui.Test/Forms/Backstage/BackstageViewModelTest.cs	(.../BackstageViewModelTest.cs)	(revision 7ed9edfa97f83402ba56d518da451e56f0cdccf6)
+++ Core/Gui/test/Core.Gui.Test/Forms/Backstage/BackstageViewModelTest.cs	(.../BackstageViewModelTest.cs)	(revision b641495492850378ead7ce56a66c4b52c6e6041e)
@@ -38,17 +38,17 @@
 
             // Assert
             Assert.IsInstanceOf<INotifyPropertyChanged>(viewModel);
-            
+
             Assert.IsNotNull(viewModel.InfoViewModel);
-            Assert.IsNotNull(viewModel.OpenViewModel);
             Assert.IsNotNull(viewModel.AboutViewModel);
-            
+            Assert.IsNotNull(viewModel.SupportViewModel);
+
             Assert.IsNotNull(viewModel.SetSelectedViewModelCommand);
-            
+
             Assert.AreSame(viewModel.InfoViewModel, viewModel.SelectedViewModel);
             Assert.IsTrue(viewModel.InfoSelected);
-            Assert.IsFalse(viewModel.OpenSelected);
             Assert.IsFalse(viewModel.AboutSelected);
+            Assert.IsFalse(viewModel.SupportSelected);
         }
 
         [Test]
@@ -65,15 +65,15 @@
             {
                 viewModel.SelectedViewModel = viewModel.AboutViewModel;
             }
-            
+
             // When
             viewModel.SetSelectedViewModelCommand.Execute(backstagePageViewModel);
-            
+
             // Assert
             Assert.AreSame(backstagePageViewModel, viewModel.SelectedViewModel);
             Assert.AreEqual(infoSelected, viewModel.InfoSelected);
-            Assert.AreEqual(openSelected, viewModel.OpenSelected);
             Assert.AreEqual(aboutSelected, viewModel.AboutSelected);
+            Assert.AreEqual(openSelected, viewModel.SupportSelected);
         }
 
         [Test]
@@ -91,27 +91,27 @@
             // Precondition
             Assert.AreSame(backstagePageViewModel, viewModel.SelectedViewModel);
             Assert.AreEqual(infoSelected, viewModel.InfoSelected);
-            Assert.AreEqual(openSelected, viewModel.OpenSelected);
             Assert.AreEqual(aboutSelected, viewModel.AboutSelected);
+            Assert.AreEqual(openSelected, viewModel.SupportSelected);
 
             // When
             viewModel.SetSelectedViewModelCommand.Execute(backstagePageViewModel);
 
             // Assert
             Assert.AreSame(backstagePageViewModel, viewModel.SelectedViewModel);
             Assert.AreEqual(infoSelected, viewModel.InfoSelected);
-            Assert.AreEqual(openSelected, viewModel.OpenSelected);
             Assert.AreEqual(aboutSelected, viewModel.AboutSelected);
+            Assert.AreEqual(openSelected, viewModel.SupportSelected);
         }
 
         private static IEnumerable<TestCaseData> GetBackstagePageViewModels()
         {
             yield return new TestCaseData(new Func<BackstageViewModel, IBackstagePageViewModel>(
-                                              viewModel => viewModel.InfoViewModel), true, false ,false);
+                                              viewModel => viewModel.InfoViewModel), true, false, false);
             yield return new TestCaseData(new Func<BackstageViewModel, IBackstagePageViewModel>(
-                                              viewModel => viewModel.OpenViewModel), false, true, false);
-            yield return new TestCaseData(new Func<BackstageViewModel, IBackstagePageViewModel>(
                                               viewModel => viewModel.AboutViewModel), false, false, true);
+            yield return new TestCaseData(new Func<BackstageViewModel, IBackstagePageViewModel>(
+                                              viewModel => viewModel.SupportViewModel), false, true, false);
         }
     }
 }
\ No newline at end of file
Fisheye: Tag b641495492850378ead7ce56a66c4b52c6e6041e refers to a dead (removed) revision in file `Core/Gui/test/Core.Gui.Test/Forms/Backstage/OpenViewModelTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Core/Gui/test/Core.Gui.Test/Forms/Backstage/SupportViewModelTest.cs
===================================================================
diff -u
--- Core/Gui/test/Core.Gui.Test/Forms/Backstage/SupportViewModelTest.cs	(revision 0)
+++ Core/Gui/test/Core.Gui.Test/Forms/Backstage/SupportViewModelTest.cs	(revision b641495492850378ead7ce56a66c4b52c6e6041e)
@@ -0,0 +1,40 @@
+// Copyright (C) Stichting Deltares 2021. All rights reserved.
+//
+// This file is part of Riskeer.
+//
+// Riskeer is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using Core.Gui.Forms.Backstage;
+using NUnit.Framework;
+
+namespace Core.Gui.Test.Forms.Backstage
+{
+    [TestFixture]
+    public class SupportViewModelTest
+    {
+        [Test]
+        public void Constructor_ExpectedValues()
+        {
+            // Call
+            var viewModel = new SupportViewModel();
+
+            // Assert
+            Assert.IsInstanceOf<IBackstagePageViewModel>(viewModel);
+        }
+    }
+}
\ No newline at end of file