If you have been assigned to review a reqiest, another reviewer cannot “TAKE” it from you. You must first “UNTAKE” the Pre-Approval to put it up for grabs, or “Assign” the Pre-Approval to someone else.
An assigned reviewer may “UNTAKE” a Travel Pre-Approval by using the “Assigned To:” dropdown and selecting “Nobody”.
The following pop-up message will display. Click OK to “UNTAKE”, or cancel.