Snap the receipt, tick who had what, mark anyone eating on the house. Service charge, GST and discounts are shared in proportion to what each person ordered.
Tap Free for anyone being treated (birthday, guest). Their share is paid by everyone else.
Tick everyone who shared each dish or drink. A shared item is split evenly between the people ticked.
Lines added on top of the food. Use minus for vouchers, discounts or rounding down. Leave out GST if the receipt says it's already included.