Tap a piece on the table to move, rotate, swap or remove it.
Type the table you want, e.g. "ruined gothic city, 6x4, dense, with a river".
Choose which scatter and obstacles this table may use. Tap a piece to switch it off or on, then reshuffle.
Three choices. Everything else has a sensible default.
Any piece from any faction. Set how many, then add them to the table.