Silly mistake: removed setup menu

Amber has the option of having the setup menu as an option of the Quit menu, and it also has the option of removing the Setup menu from the main menu. I mistakenly did the latter without enabling the former. How can I now get into setup to get it back into some part of the menu?

I’ve gone through every part of the UI, trying context menus etc. but no luck. This is Kodi 17.3 (Krypton) on a Minix Android box, which I haven’t rooted, so I don’t have shell access either. Suggestions?