Several attendants

I’ve read some topics about this requirement, and I think that is mandatory to have a multiplier for 2 or 3 additional persons, in my case I need 10 persons per booking as maximun. The test I made on my home server works great and i’m thinking to buy the addons but I need that option to have 2 or more participants. I have seen other plugins but yours works great with time slots bigger than 4 hours thats why i’m interested.