uMap - starred maps?

[Urml]

Hello,

today I’ve noticed that umap has a “starred maps” feature (favorisierte Karten / Favoriten in German).

I could not find a way to get my favorite maps into that section. Is there a button on a map with which I can tag a map?

[Mannivu]

If you open a random map and click in (i) on the left bar, you can star it