For events that are free but and have limited space, you can create a RSVP event so customers can save a spot. This works the same way as you would create a normal event. Create a new event, fill in all event info, then on “Ticket Pricing and Options” you will want to select “Free Event (RSVP only)”. Select the start and stop times of when people can RSVP and put in the quantity you wish to admit followed by a short description.
After you have filled out all the required information, you may post the event and start RSVPing people!