North wall along the top. South wall along the bottom.
Drag the floor to move around the hall.
Boards ride carts. Chemistry stays in the stacked totes.
Ping an operator onto another station, call maintenance, and finish a tote swap. The tote level is a shop-clock picture while a lot is running. No gallons per minute is posted. Each tote is 320 gal.
Who is on a lot, who is free, and who is waiting. Away is one status. Times are shop minutes.