[Map] Flying Positions in custom maps (Advance Map)

Hello. Sorry, 2nd query in 1 day. If I have created a new map in Fire Red version on Advance Map is there a way to add a flying position? Events tab only offers Persons, Signposts warps and scripts. Do I need to edit an existing map that already has a flying position?

I'm not allowed to post a link to it because I have less than 5 posts, but if you google "advancemap flying position", the first result is a tutorial thread on pokecommunity explaining how to add flying positions

Can somebody post the actual link? Because currently the top google result for "advancemap flying position" is just this thread.

I'd refrain from using Amap, use Hex maniac advance instead as its far more polished and offers new features.
Here's the tutorial for adding fly spots