Download the app: https://apps.garmin.com/en-US/apps/59e3cbf7-921a-4353-8d92-e988c4b74ed8
SETUP STEP: Turn on GPS until you get a green status on any activity to save your last position and everything will be fine. Starting a run/walk should do it. No need to save the activity but times are calculated based on your GPS location for accurate results.