It is supposed to be easy to change sensors, but I don’t get how it is done. I have 2 homes that we live in 6 months at a time. I have a wahoo tickrx heart rate monitor at each home, so when I switch locations I have to sync with the HRM at my other location. The instructions say go to device settings to add a sensor, but I’ll be damned if I can find something called device settings on my iCardio app. Can you explain to me what to do to install my other wahoo HRM, and do I have to delete the one I am not using every time I change locations?