The next step is to create a new layer for the fireplace.
As done in previous steps for adding new layers, the same process must be followed to create a layer for the Fireplace.
First, open the sidebar.
Second, lock the Doors layer since no additional changes will be made.
Fourth, as before, double click on the new layer (Layer 5) and rename it to Fireplace.
Lastly, make certain the Fireplace layer is selected and then dismiss the Layers Panel by clicking outside of it.
The Layers Panel should appear as shown below once these steps have been completed.