The next step in this proces is to create a new layer for the Door Cutouts.
As with the previous step where a new layer was added for the Interior Walls, the same process must be followed to create a layer for the Door Cutouts.
First, open the Layers Menu.
Second, lock the Interior Walls layer since no additional changes will need to be made.
Third, press on the Add Layer Button to create a new layer.
Fourth, as before, press on the Edit Button and rename Layer 3 to Door Cutouts.
Lastly, make sure that the Door Cutouts layer is selected and then dismiss the Layers Menu by tapping outside of it.