Trace Mode's Draw to feature allows you to extend an individual line from where your beginning point is anchored to any other corner point or pop point on the sketch canvas. To use the Draw to feature:
By default, TOTAL for Mobile is set to stay in Place Cursor mode after placing the cursor on the sketch canvas. Click here for information on changing these settings to automatically switch to Draw mode after placing the cursor to eliminate a few extra taps.
The new area is autonomous from the original area and you can move the new area independently from the rest of the sketch. Tap and drag the new area to a new location on the sketch canvas.