After selecting your exam you'll be presented with Proctortrack's Best Practices:

Ensure your face is clearly visible - Hair, sunglasses, hats or anything that covers your face can cause test to be flagged for low integrity. Eyeglasses are accepted.

Create the proper lighting - Sit in a consistently well-lit room with as plain a background as possible.  

Turn Off All Noise-Making Devices - Mobile phones set to vibrate emit detectable sound and any sound from a mobile device is flagged as a violation.

Sit Directly in Front of Your Webcam- Make sure to stay in the middle of the webcam's view. Leaving the frame or looking away from the test will result in a low integrity grade.

Use a private testing area - Sit upright in an area where other people won't talk and cannot pass behind you. .