Query about Toolbar LIST command

I read in help for the toolbar internal command that if Toolbar LIST is entered:

Using this, there is displayed a horizontal list of toolbar names (not a drop down list). And which is not scrollable (ie which you use the arrow keys of a keyboard to scroll through. (I know this is possible, in a way, by going through Settings/Toolbars).

Is it possible to configure the internal command (or some other command) to perform in similar way to the new Drive List command?

You would normally put that command inside a sub-menu to create a pop-up list. That's how the default toolbars have it.