To Set up a Ground Zone:
Click and drag the corners of the shape to cover only the ground where the target's feet will be. If you want to start over, click "Clear ground zone" to create a new area of interest with up to 28 points.
To move the shape, click and hold inside it.
Using the "Duration Inside Area of Interest" dropdown menu, select how long an object needs to stay inside the Ground Zone to trigger a recording.