Multiple capacity booking for a particular time slot by one user

Hi,

We want to purchase BirchPress plugin for booking system but we want our user to provide facility to book Multiple capacity for a particular time slot at a single time.

Scenario :

1) select location
2) select Service
3) Select Provider
4) Select Date
5) Select Time
6) Enter Number of capacity you want book

We want 6th option while booking So Can it be possible with your plugin or can we extend this kind of functionality using Plugin hooks?

Looking forward to your response.

Thanks,
Bimal