How to Move a Player to the Waitlist

Once logged into your tournament, use the 3-line menu to select the "Attendees" tab:

Locate the player who you wish to move.  Locate the event on the players registration that you want to move them to the waitlist, and then click on the 3 dots to the left of the event name and select the "Move to Waiting" option that appears:

Once selected the player will now be listed on the waiting list for this event.