You may want to have gridlines visible on your drawing canvas to help you lay out and scale objects carefully:
On the toolbar ribbon, select
A fixed gri… See more

stencil, drag one of the room shapes onto the drawing page.
Resize the room shape … See more

stencil, drag wall shapes onto the drawing page, positioning them inside the exterior structure.
Continue to draw the interior by using these options:… See more

stencil, drag door and window shapes on top of walls.
Doors and windows automatically rotate to align with and glue to the wall. They also acquire th… See more

stencil, drag wall switches, outlets, and other wall fixtures onto wall shapes. Release the mouse button when a bold square appears, which indicates that the symbol is g… See more