How do I place my Dexcom ONE+? Sensor and transmitter, everything in one.

Dexcom ONE+ Sensor and transmitter, all in one: Shelf life of up to 10 days plus a 12-hour grace period. Warm-up period of 30 minutes. Customizable high level alerts (+ option Delay 1st high level alert), low level and technical alerts. Optional calibration, and Event registration. Waterproof sensor. Glucose data in the app or receiver. Both options can be used simultaneously. Up to 24 hours of glucose data. *Share & Follow Technology