hey jennii~ ^^
Great to see you here~ Welcome to PG Ent!
Skipping Trainees is entirely up to you, basically if you don't skip it, we give you a buddy and you have to go through 2 mixes and 2 video mixes before going into soloists. If you think you don't want to go through learning how to mix again though, you can ask to skip Trainees.
Hope to see you in future collaborations~ ^^
~Shani