Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r85c24f25efa5c7d92df2c952bcf1de53dc15276f -r4bcead3f76f6dce4ac4d13ce5dda2f1f6d1d0b2c
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs)	(revision 85c24f25efa5c7d92df2c952bcf1de53dc15276f)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs)	(revision 4bcead3f76f6dce4ac4d13ce5dda2f1f6d1d0b2c)
@@ -225,6 +225,42 @@
             }
         }
 
+        /// <summary>
+        /// Gets or sets the indicator whether the combined assembly should be overwritten by <see cref="ManualAssemblyCategoryGroup"/>.
+        /// </summary>
+        /// <exception cref="NotSupportedException">Thrown when <see cref="FailureMechanismSectionAssemblyCategoryGroup"/>
+        /// is a valid value, but unsupported.</exception>
+        public bool UseManualAssemblyCategoryGroup
+        {
+            get
+            {
+                return SectionResult.UseManualAssemblyCategoryGroup;
+            }
+            set
+            {
+                SectionResult.UseManualAssemblyCategoryGroup = value;
+                UpdateInternalData();
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets the manually selected assembly category group.
+        /// </summary>
+        /// <exception cref="NotSupportedException">Thrown when <see cref="FailureMechanismSectionAssemblyCategoryGroup"/>
+        /// is a valid value, but unsupported.</exception>
+        public SelectableFailureMechanismSectionAssemblyCategoryGroup ManualAssemblyCategoryGroup
+        {
+            get
+            {
+                return SelectableFailureMechanismSectionAssemblyCategoryGroupConverter.ConvertTo(SectionResult.ManualAssemblyCategoryGroup);
+            }
+            set
+            {
+                SectionResult.ManualAssemblyCategoryGroup = SelectableFailureMechanismSectionAssemblyCategoryGroupConverter.ConvertFrom(value);
+                UpdateInternalData();
+            }
+        }
+
         public override void Update()
         {
             UpdateDerivedData();