Before accessing Kiosk Mode on your iPad, you will first need to set it up online. Follow this guide to learn how to set up Kiosk mode.
Once you have it all set up, sign in to the Hopin Organizer app and select Kiosk Check-in from the menu on the left and select the kiosk mode you would like to use on this device.
If you have not set a password during the Kiosk Mode set up then you will need to set a temporary password to be able to logout of Kiosk Mode again.
Now, people can start checking themselves in and you will see the "Check-in" screen.