Right click the menu bar and open “Customize Menus”. You can add the command anywhere in the menu.
If you can’t find the command you want to add, search it in Keyboard Map (or Quick Launch) and see the category it belongs to.

And you can even use a keyboard shortcut (also customizable) to trigger a command.

Yes, I also think such features in EmEditor need to be enhanced.
But we are off topic…
Please keep one topic per thread if not relevant.