How to tag challenge/tag videos??

[LRwF]

Hello, I hope this is in the right place. Ive been looking through lots of threads on the forum about how to tag and what not to tag and how sometimes the wrong tags can get you into trouble.. Im still struggling with the art of tagging but I am REALLY stuck at how to tag Challenge or Tag videos.

Does anyone have any tips of what to tag, lets say, a chubby bunny challenge?

We only have one challenge on our channel but we are uploading a few in the next few weeks.. if you want to know how iv tagged them already let me know

Thanks for any help!