Layout before you grout
Drag the gold origin disc to choose where the first full tile sits. Inspect mode colours sliver cuts amber and other cuts blue so you can see the ugly edge before you buy boxes.
Origin is at 0.00 m across and 0.00 m from the back wall. The shower tray is left untiled so you can judge the cut against the glass.
Counts treat every cut as its own tile (no pairing two cuts from one piece). Confirm box sizes on the carton, and measure the finished room before you order.