Well, it's not possible at all (yet?) - at least I think.
I'd propose to go and create support ticket with a proposition to create this feature if you want it...
I received a firmware update last week on my Walgreens Activity Tracker (hardware version-2:31; software version-1.277) that added a music note under "Apps". I'm on an iPhone. Anyone know what iPhone app or whatever the music note controls. It seems you can Play, Pause, and go to the next track or the previous one. I tried it with Spotify, but it did nothing. I do not have a subscription to Apple Music (as I have a premium subscription with Spotify) or any songs from iTunes...
I was in my Walgreens tracker playing Amazon music from my phone. The watch would not allow me to forward or pause. Nothing.
The appearance of the music note did not bring music-player functionality to the Walgreens activity trackers. It has been corrected in the latest software update, so please make sure to update past 1.277.
Kimberly Culp