I need more detailed explanation of how to add dates from my forms to a google calendar

I need more detailed explanation of how to add dates from my forms to a google calendar

I'd like My office assistant to schedule appts for my office employees.

Based on the employee she is scheduling to service that order, I'd like it to look up their Google Calendar (she has permissions via google to write to their calendars) and insert the appt on their calendar.

I've found some on success gapp create event in some of the help, but I can't seem to get it to work.

Any ideas for a beginner?