Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Builders/FailureMechanismSectionResultViewColumnBuilder.cs
===================================================================
diff -u -r352b81d92f568dbe5e072a2c00b4e518ee1605d3 -r2a95bff2847d39e485538ca07d131f4099231580
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Builders/FailureMechanismSectionResultViewColumnBuilder.cs	(.../FailureMechanismSectionResultViewColumnBuilder.cs)	(revision 352b81d92f568dbe5e072a2c00b4e518ee1605d3)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Builders/FailureMechanismSectionResultViewColumnBuilder.cs	(.../FailureMechanismSectionResultViewColumnBuilder.cs)	(revision 2a95bff2847d39e485538ca07d131f4099231580)
@@ -617,6 +617,36 @@
 
         /// <summary>
         /// Adds a column to the <paramref name="dataGridViewControl"/> showing the
+        /// overridden combined <see cref="ManualFailureMechanismSectionAssemblyCategoryGroup"/>.
+        /// </summary>
+        /// <param name="dataGridViewControl">The <see cref="DataGridViewControl"/> to add the column to.</param>
+        /// <param name="dataPropertyName">The data property name of the column.</param>
+        /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
+        public static void AddManualAssemblyCategoryGroupColumn(DataGridViewControl dataGridViewControl, string dataPropertyName)
+        {
+            if (dataGridViewControl == null)
+            {
+                throw new ArgumentNullException(nameof(dataGridViewControl));
+            }
+
+            if (dataPropertyName == null)
+            {
+                throw new ArgumentNullException(nameof(dataPropertyName));
+            }
+
+            IEnumerable<EnumDisplayWrapper<ManualFailureMechanismSectionAssemblyCategoryGroup>> dataSource =
+                CreateEnumDisplayWrappers<ManualFailureMechanismSectionAssemblyCategoryGroup>();
+
+            dataGridViewControl.AddComboBoxColumn(
+                dataPropertyName,
+                Resources.FailureMechanismResultView_ManualAssembly_DisplayName,
+                dataSource,
+                nameof(EnumDisplayWrapper<ManualFailureMechanismSectionAssemblyCategoryGroup>.Value),
+                nameof(EnumDisplayWrapper<ManualFailureMechanismSectionAssemblyCategoryGroup>.DisplayName));
+        }
+
+        /// <summary>
+        /// Adds a column to the <paramref name="dataGridViewControl"/> showing the
         /// overridden combined assembly probability.
         /// </summary>
         /// <param name="dataGridViewControl">The <see cref="DataGridViewControl"/> to add the column to.</param>
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Builders/FailureMechanismSectionResultViewColumnBuilderTest.cs
===================================================================
diff -u -r352b81d92f568dbe5e072a2c00b4e518ee1605d3 -r2a95bff2847d39e485538ca07d131f4099231580
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Builders/FailureMechanismSectionResultViewColumnBuilderTest.cs	(.../FailureMechanismSectionResultViewColumnBuilderTest.cs)	(revision 352b81d92f568dbe5e072a2c00b4e518ee1605d3)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Builders/FailureMechanismSectionResultViewColumnBuilderTest.cs	(.../FailureMechanismSectionResultViewColumnBuilderTest.cs)	(revision 2a95bff2847d39e485538ca07d131f4099231580)
@@ -1282,6 +1282,60 @@
         }
 
         [Test]
+        public void AddManualAssemblyCategoryGroupColumn_DataGridViewControlNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => FailureMechanismSectionResultViewColumnBuilder.AddManualAssemblyCategoryGroupColumn(null, "property");
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("dataGridViewControl", exception.ParamName);
+        }
+
+        [Test]
+        public void AddManualAssemblyCategoryGroupColumn_DataPropertyNameNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => FailureMechanismSectionResultViewColumnBuilder.AddManualAssemblyCategoryGroupColumn(new DataGridViewControl(), null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("dataPropertyName", exception.ParamName);
+        }
+
+        [Test]
+        public void AddManualAssemblyCategoryGroupColumn_WithParameters_AddsColumnToDataGridViewControl()
+        {
+            // Setup
+            using (var form = new Form())
+            using (var control = new DataGridViewControl())
+            {
+                form.Controls.Add(control);
+                form.Show();
+                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;
+
+                // Precondition
+                Assert.AreEqual(0, dataGridView.ColumnCount);
+
+                // Call
+                FailureMechanismSectionResultViewColumnBuilder.AddManualAssemblyCategoryGroupColumn(control, dataPropertyName);
+
+                // Assert
+                Assert.AreEqual(1, dataGridView.ColumnCount);
+
+                var columnData = (DataGridViewComboBoxColumn)dataGridView.Columns[0];
+                Assert.AreEqual(dataPropertyName, columnData.DataPropertyName);
+                Assert.AreEqual("Assemblageresultaat\r\nhandmatig", columnData.HeaderText);
+                Assert.AreEqual("Value", columnData.ValueMember);
+                Assert.AreEqual("DisplayName", columnData.DisplayMember);
+
+                IEnumerable<EnumDisplayWrapper<ManualFailureMechanismSectionAssemblyCategoryGroup>> expectedDataSource =
+                    CreateExpectedEnumDisplayWrappers<ManualFailureMechanismSectionAssemblyCategoryGroup>();
+                AssertEnumDisplayWrappersAreEqual(expectedDataSource, (EnumDisplayWrapper<ManualFailureMechanismSectionAssemblyCategoryGroup>[])columnData.DataSource);
+            }
+        }
+
+        [Test]
         public void AddManualAssemblyProbabilityColumn_DataGridViewControlNull_ThrowsArgumentNullException()
         {
             // Call