For example: I create a basic MainMenu "My Menu" AddIn by VS2010, and add "isRootMenu=true", complie and install the addin, open ArcMap, I have to open the customize dialog -> commands, find the "[ Menus ]" below the Categories box, and find "My Menu" in the Commands box and drag it onto the MainMenu.
Many users worried about that the operation in customize dialog is too difficult.
Is there a way to Add AddIn To ArcMap UI Automatically After AddIn Installed?