CWKPQ preboss room/other questions

So I know I still need 2 of each class (adventurers) to sign up to enter.

I'll need 1 of each in there to activate sigils so 5 people minimum while we're inside. (so the other 5 can be mules right?).

I'll then need those same 5 people for the preboss room.

Questions:

1) those 10 people that sign up... can 5 of those be sign up mules and I just enter with 1 adventurer of each type?

2) Can a WH enter the preboss archer room to take out the black crimson guard things? Same question applied to BaMs with the mage room where you need to teleport.

3) Can a BaM's teleport be used to activate sigils? 0.o... since it IS after all a skill that adventurers have...
reworded: Is the BaM teleport the same as AM/Bishop teleport so that it may be used to activate sigils?


Thanks~