Unfortunately, due to production's needs, and for safety, most shows limit the number of tickets requested to 2 or 4.
If a show accepts group requests, the option to request them will be in the "QUANTITY" dropdown menu when submitting your ticket request.
Having multiple members of your party request tickets is totally fine, but your entire party may not be seated together.
You cannot write in the ticket comments "I would like more tickets than you allow." It doesn't work that way. If your request is approved, it will be for the number submitted through the drop-down menu.