How can I create L-shaped rooms easily?

Moving the blue dots located on each wall will create new vertices. By dragging one of the blue dots along the boundary you can effectively split that wall in two segments while keeping it straight. Select the segment you need to extend outwards and click on the rectangular handle. A pop-up will appear allowing you to change to an oval-shaped handle. This enables you to pull out that portion of the wall to create an L-shaped room.

For more help on this topic, see our guide on Creating a Floor Plan.