You can access flight planning in several different ways.
Ad-Hoc
You can access ad-hoc flight planning from the Home Screen by tapping the Menu button and selecting Flight Planning. You will need to tap out your flight area on the map.
Ad-Hoc Flight Planning
Fly a Field Boundary
You can open flight planning from Field Details by swiping on a field boundary or triple-tapping any item in the Shapes list. Entering through this way will default the flight area for you.
Flight Planning from a Field Boundary
Task Flight Planning
The Task List allows you to enter flight planning. The task's flight specifications and field boundary automatically populate the flight parameters and area.