Step-By-Step:
Step 1: Navigate to the Guests module along the top of the POS, then click on Guests.
Step 2: Search for the Guest that you want to delete, and click on Action (three small dots) on the right hand side. Select Delete.
Step 3: You will be able to view this Guests in the Archived tab.
Step 4: If you would like to Unarchive the Guest, click on Action and then select Unarchive.
Please note that when you delete and archive a Guest, this does not end the billing if the Guest is a member. You will need to navigate to their profile and expire their membership to stop billing (see below).