Started work on the 'Folder Roots'. Added the skeleton of this feature to the ProfileManager form.

DataOrganizer/ProfileManager.cs

@@ -14,19 +14,46 @@ namespace DataOrganizer
     {
         private string MachineNameLabelText { get; } = "The Machine Name property determines what\r\nprofile will be loaded automatically (Currently: '{0}').";
         private bool IsUpdating { get; set; }
+        private ContextMenu FolderGroupListContextMenu { get; set; } = new ContextMenu();
 
         public ProfileManager()
         {
             InitializeComponent();
 
+            var renameMenuItem = new MenuItem("Rename");
+            var deleteMenuItem = new MenuItem("Delete");
+            FolderGroupListContextMenu.MenuItems.Add(renameMenuItem);
+            FolderGroupListContextMenu.MenuItems.Add(deleteMenuItem);
+
             ProfilesComboBox.SelectedIndexChanged += ProfilesComboBox_SelectedIndexChanged;
             ProfileNameTextBox.TextChanged += ToggleAddOrUpdateButton;
             NewContentLocationTextBox.TextChanged += ToggleAddOrUpdateButton;
             MachineNameTextBox.TextChanged += MachineNameTextBox_TextChanged;
+            FolderGroupsTreeView.NodeMouseClick += FolderGroupsTreeView_NodeMouseClick;
+            renameMenuItem.Click += RenameMenuItem_Click;
+            deleteMenuItem.Click += DeleteMenuItem_Click;
 
             UpdateProfileComboBox();
         }
 
+        private void FolderGroupsTreeView_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
+        {
+            if (e.Button == MouseButtons.Right)
+            {
+                FolderGroupListContextMenu.Show(FolderGroupsTreeView, e.Location);
+            }
+        }
+
+        private void DeleteMenuItem_Click(object sender, EventArgs e)
+        {
+            throw new NotImplementedException();
+        }
+
+        private void RenameMenuItem_Click(object sender, EventArgs e)
+        {
+            throw new NotImplementedException();
+        }
+
         private void MachineNameTextBox_TextChanged(object sender, EventArgs e)
         {
             if (MachineNameTextBox.Text.Length > 0)
@@ -122,5 +149,17 @@ namespace DataOrganizer
             AddOrUpdateProfileButton.Text = "Update";
             IsUpdating = true;
         }
+
+        private void InsertGroupName_Click(object sender, EventArgs e)
+        {
+            if(!string.IsNullOrEmpty(FolderGroupNameTextBox.Text))
+            {
+                if (!FolderGroupsTreeView.Nodes.ContainsKey(FolderGroupNameTextBox.Text))
+                    FolderGroupsTreeView.Nodes.Add(FolderGroupNameTextBox.Text);
+            }
+
+            FolderGroupNameTextBox.Text = string.Empty;
+            FolderGroupNameTextBox.Focus();
+        }
     }
 }