I believe you configure this within the Gear Fit Manager App. Manage Primary Contacts. Once those are set up, you are then able to press the power button three times in a row to send a help request. If you are not using a Galaxy S5 though with S Health 3.1, this option may not be available.
So if you own an S4 you can't get the latest version of S Health. WHY?
Posted via Android Central App