Outline the places you want to sweep, then export a GeoJSON file and import it on the phone.
Connecting…
Find a place
Draw
Click the map to drop corners. Drag a corner to move it, click the small dot between two corners to add one there, and right-click a corner to remove it.
Selected area
Areas
Nothing drawn yet.
File
Import also accepts the app's own coverage export, so you can see the streets you have already driven while deciding where an area should stop.
Overall
Areas
The phone has not sent anything yet.
Recent drives
Sent from the phone under Settings → Area builder server. Turn on “Send after every drive” and this fills in on its own.