How to add command to session right-click context menu

At one time, someone told me how to add the "Disconnect" command to the right-click context menu for a Remote Desktop session tab. But, now I can't remember how to do it. I've searched for about an hour and can't figure it out. Any help?
I would like to remove some of the other commands/menu items to make it easier to find the commands that I want to use. For example, I need to use "Send Ctrl+Alt+Del" and it can't be added to the quick access toolbar; so, I'm trying to declutter the menu where it does appear. If I could move it out of a submenu, that would also help.