If you want to add group event then simply go to the add module and click on event & classes and add event type
Now as showing below you will see event type like one on one or group, select group
And fill out the following details and save it
Need to fill the event name.
Location
Display location
Description
Max invitees in a spot
Price
Event color
After saving the details it will move you to the next page where you have to fill some more details like event booking timing and date.
