If you don't want to reset someone's app but have the time, I've noticed that if you wait till 5:03 on the timer, click back into that order, wait for the 2nd honk and banner that says the guest has arrived to go away, and then complete the order, it basically "restarts" the timer. It doesn't physically restart the timer, so if you were to look at personal metrics it would be like 5 mins, but it does bring your drive up time down on the mpm. Try it. Nobody else talks about it but it's the trick I use and it works at my store. It's a little much to explain to people but it's what I've perfected and some of my other TM's do because we hate asking people to restart their apps.