A quick comparison of the Garmin Connect Mobile App (IOS) among friends show that not everyone has the same list of available options on their dashboard.
A few friends have only ONE option: Activities. They also have THE MOST RECENT version of the app, having uninstalled and reinstalled this app.
I have the following options on my phone:
Active Calories
Activities
Leaderboard
MyFitnessPal
Sleep
Steps
Weight
There should be a universal list of available options to turn OFF or ON. There doesn't seem to be a specific phone requirement or version. (for the record, android phones also have this lack of uniform selectability)