How to insert a fireplace/ niche/ recess.
Step 1: Choose Wall Slot.
Step 2: Select in the floor plan the corner of the wall from which you measure the chimney / niche.
Step 3: Measure the distance d1.
Step 5: Choose a type.
Step 6: Measure the width and depth of the recess / chimney.
For a niche / a breakthrough / a protrusion, also measure the opening height and the sill height.
Step 6: Select OK to finish the command.