Our new waiters keep opening the wrong table on the phone. Anything I can do?

Draw the floor. Settings → Tables & QR ordering → Floor plan lets you drag each table to where it really stands, make it wider, taller or round, and the waiter's phone then draws the same room. Name tables the way staff say them out loud, such as 12 or Terrace 3, and keep the area names short and consistent. A table only ever has one open tab, so tapping a dark tile shows what is on it rather than starting a second bill. The Tables, tabs and the kitchen screen tab in the docs has a guide on drawing the floor plan.