How to favorite a tag??

I’ve been a manga reader for a loooong time, but I just made a mangago account (mostly for the BL/ Yaoi content ) I’ve been messing around in my settings but I can’t find out how to favorite a hashtag. Can anyone help me?? I’m a sucker for love triangles btw~
2021-01-26 16:26 marked

prod.hui's Favorite Tags

What can a Favorite do?

When you find a content posted by another user as interesting, you can click on the "♥Like" button to save it. You can easily find these saved contents in your Favorites list.