@ veroniQ there is room for stools just not included any.
@ Adele i drew walls around the cabinets, created a room in them, deleted the walls, exported the room, after unchecking ceiling and display area, then copied it, added 20 mm to the width and length, 4 times, then stacked them up then used the alignment tool on 2 edges to position them. Could have just used walls, adjusting the wall thickness for each layer, but that would mean 4 exports.

Mike