Originally Posted by CEW4
That's exactly what I mean. And I'm aware of the options in Preferences, yet I've not been able to use them: I'm successful in adding a command to the menu bar, but not a menu.
Can you help me on this?
There is nothing to help, you've figured it all out and it doesn't do what you expect. However there are right click context menus that you can access via the main library view or the browser view.