I want to use the default app (I guess iTunes) for my Vivoactive, the FAQ's talk about going to the menu (top left 3 lines) and selecting settings and choosing default music app.
In my view I see only a notifications in-tray like icon top left of my app screen, so I can't use the music controls on my Vivo,
Garmin were fairly poor when I contacted them and gave me the same answer in FAQ's