How to set heart rate zones on garmin connect app for Fenix 7s Solar?

I need to set my heart rate zones but I just can't find where to do it!!

Apparently, it's not possible on Connect Web, but I can't seem to find where and how to do it on the app either! 

This is what I get:


  

I want to insert the minimum and maximum value for each zone, like in this example (Fenix 6X on iOS):

This is driving me crazy!