Just a while ago I encountered an off-topic question (“Installation complete” msg when opening tor link in Android). I wanted to suggest closing it and migrating it to the Super User site but Closing > Off-Topic > Migration suggests only meta.tor.stackexchange.com for migration.
How can we add other sites to this menu? If someone has the rights to extend the menu can the Super User site be added?
Whenever you see a problem but it doesnt fit any of the existing flag/close reasons, you should raise a custom flag i.e. flag for moderator attention with a clear description of the problem (why it should be migrated, and to where).
As far as editing the list of off-topic close reasons/migration sites is concerned, the mods, once appointed, will have the ability to edit the options available under off-topic.
