1. Choose the Connect IQ App on your phone:
2. Choose your watch in the upper righthand corner:
3. Choose My Data Fields on this screen:
4. Choose Stryd Zones:
5. Choose Settings:
6. You should now see this settings screen. If you have a higher memory Garmin watch, instead of the Critical Power section you will see username. Fill in the information and hit save in the upper righthand corner.
7. The last step is to sync your watch with the Garmin Connect app on your phone.