To save imagery for Offline Mode:
1) Tap on the Save Imagery button.
2) Tap OK.
3) You will see the imagery saving at the bottom of the screen.
4) Once saved, you can access the imagery at any time by tapping the Imagery & Overlays button.
5) Tap on Saved Imagery.
6) You can tap the Trashcan button to delete imagery. To view the imagery, tap on it, then tap Done.