You must activate Self Check-in on each event, one-by-one.
You do this by choosing the form that event guests will complete when they use the Self Check-in Page
Self Check-in must be turned on at the Event Category level before you can activate it on an individual event
Activate it while creating a new event
Select Create in the top menu
Select Event
Choose the project and event category
Complete the form as usual but before you press Save, select a survey in the Self Check-in Form dropdown list
Press save
That’s it. You can now open or share the Self Check-in Page.
Activate it on an existing event
Select My Apps in the top menu
Select Events
You arrive on the Manage Events page
Select the name of the event you want to activate Self Check-in on
Scroll down to the part of the form where you can select a survey in the Self Check-in Form dropdown list. This is where you choose the form that will be used by event guests when they check themselves into your event
Press save
That’s it. You can now open or share the Self Check-in Page.