1. From the event “dashboard” click on the “Onsite check-in” card. 

  2. Now click on the “Check-in settings” option on the left-hand side of the screen.

  3. Under the “Plus Ones” section, toggle on the “ allow plus ones” option and fill in the max number of adults and kids that can be added. 

  4. Click on the “save” button to persist the changes.