The ATHLETE PROFILE tab contains 4DP settings, cTHR settings and Rider Type (if you've completed the Full Frontal Fitness Assessment).
Your cTHR and heart rate zones appear below your 4DP settings. These are also set automatically based on your fitness assessment results. We recommend wearing a compatible heart rate monitor for this feature. Heart rate zones displayed in the app will match the zones that appear here. These can also be manually edited if required. Learn about cTHR
Editing your 4DP settings will affect the workout targets in your workouts, but will NOT change your rider type or the associated graph in your Athlete Profile. That can only be changed by completing Full Frontal.