Where to find "Calculate Number Registrants Based on Tickets Quantity"

OK. So exactly what's the problem you are having here? Could you please explain more details about it ?

Tuan

Ok, i will try to explain it better.

We have four alpakas. people can book an event, where there can walk with the alpakas. it should be possible, to book the following tickets:
1 alpaka - 1 person
1 alpaka - two persons
1 alpaka - three persons

So whether one guest walks with one alpaka all the time or a group of maximum three persons walk with one alpaka. So at least we can have up to twelve persons which are walking with four alpakas.

With the normal events-registration (individual & group) we were not able to set it up. So we found "ticket types". I have translated it for you, that is what we definded at the moment:
 

In the Basic information of the event the event capacity is "4" because we only have 4 alpakas.
So no matter which ticket is sold, we can only sell four tickets because then all four alpakas are booked.

  

As you can see in the first image, i have bought some tickets via offline payment for testing. The system counts the sold tickets but it doesnt count for the event capacity.

I hope you can understand better now. thank you