Add and move the vertex
- Select the "Edit/Measure Tool" in the top toolbar.
Or you can press the "Q" button on your keyboard.
- In Map View, you will see a pop-up on the left side. Select: "Points".
- Hover over the edge you want to add the vertex to. Then click on the "+" button located at the midpoint.
You will see the "+" button is now a movable vertex.
- Click-and-drag to move the new corner vertex.