How to Move a Vertex Along a Free Hand Drawn Line
Let's move a vertex along a line we have created using the Draw Tool. Here's what you have to do to edit your map:
Select the Edit/Measure Tool
You'll notice that a new menu on your left has appeared. On the left-side pop-up, make sure “Points” is selected.
Hover over the point that you want to move.
A blue highlight will appear over vertex you can interact with using the Edit/Measure Tool. You will also see that an info box will appear with the Latitude (Lat), Longitude (Lng) and the Degree, Minutes, Seconds (DMS). In the Layer Panel you will see that the Line is highlighted while you're working on it.
Click and drag the vertex to the new location.