Appointments gcal auto confirm

Hi. I have a website with a service kidsparties.
Kidsparties was synced in both ways to gcal and it works perfect. I can block out days directly in gcal and visa versa.

since now we have a new service "workshop" . workshop and kidsparties share the same room. so when there is a kidspartie, there can be no workshop and visa versa. this part works also perfect in appointments plus.

The only think that does not work is the gcal blockout. when I put something in gcal. only the kidsparties sees it. Only when I make the "reserved by Gcal" to state "confirmed" it works also for workshops... My question: is there a tweak to auto-confirm reserved by gcal appointments? this will sole my problem, or is there another way?

Kind regards