Menu for ASP.NET Web Forms
Group Menu
Menu Types > Group Menu

Grouped menus are multiple sets of menu items organized into one or more categories. The menu items in a group share a common function. Each group may include a heading item type that represents the category name for the group. Typically group menus appear as drop-down menus with at least one heading item to label the grouped menu items. Groupings can be separated by heading items or separator items.