I just bought a Vivoactive 4s and I want to turn turn the GPS off (assuming it is on, which maybe it isn't), but the manual says to find it under settings -> Activities and Apps -> GPS, but it isn't there. Navigate IS there, but there is no apparent option to turn it off. Under Navigate, there are a few options, but under GPS it just says GPS + GLONASS. And there are choices there, but not to turn it off.
Obviously this watch is more complicated than my fitbit, and maybe I am missing something.