[Al Skierkiewicz]

Under this rule (in my opinion)...
<G37>
TEAM Members In ARENA – Each ALLIANCE shall have no more than the four designated members of each of the three participating TEAMS in the arena during a MATCH. Any ALLIANCE with additional personnel in the ARENA will be assigned a PENALTY, and the additional personnel must leave the area before the MATCH can proceed.

It is implied that there are no more than four designated team members and where there are located. Team members in the stands will yell and scream and try to direct but what you are suggesting might just raise the notice of the referees on this field under this rule. However, the GDC decides these questions through the Q&A, so I would suggest you ask to be sure.