Your screen should look like the below. Enter in your Kiosk Invitation Key and then select Next
That's it! Bookmark it or save it as icon to your Home Screen for easy future access
NOTE: For iPad users, here's how you can add the kiosk to your Home Screen. After doing this, the very first time you time open it from your home screen, iPad Safari will ask you to enter in a new kiosk invitation key as the process of pinning a webpage to your iPad home screen wipes out the cache on first stored key. Keys are one-time use only so you won't be able to re-use the one already entered. Enter in the 2nd key you created and select Next.
Additional iPad settings that several clubs have found helpful:
Use Guided Access to lock down the kiosk application