It appears the Pastor was a woman....
it appears the pastor paid/authorized an amount less than what would have been owed according to the autograt
The gratuity is automatically part of the check. Do you not see "Tip 18%" and "additional tip ______"
She already got 18% of the bill as a tip - which given the bill amount is about $7.50 (rounding). That's not bad at all considering the server probably has 5-10 tables and makes an hourly wage a round 3 bucks an hour. So do the math - this server is probably making 25-30 bucks an hour when it's busy just in 18% gratuity.