You can delete tags on your kiosk (right from the kiosk) at any time by simply following the steps below:
1) Click on the AirLoop icon on the bottom right of your kiosk 4 times in rapid succession.
2) Choose "Yes, End Kiosk Mode"
3) Tap on your Channel that shows under "Select Channel" and select "Kiosk Check-in Tags"
4) You can see all the existing tags under "Check-in Tags"
5) To delete a specific tag simply hold your finger on the row of the tag and swipe left
6) Click on "Delete" that appears when you swipe left
7) Repeat steps 5 and 6 for all the tags that you want to remove
8) Click on "Done" on the top left hand corner
7) Again tap on your Channel that shows under "Select Channel" and select "Launch Kiosk"
Your tags are now deleted. Do remember that you will need to add the tags again any time you want your customer check-ins to be tagged.