Sleep Mode

[SunsetRunner]

Hi All, Just got my Fitbit Sense, question about sleep mode. I see in the app that I can start sleep, but is there anything directly on the Fitbit that I must hit to start the sleep mode? What if I don't start it from the app, does it automatically start tracking sleep? 

I'm most excited about the sleep feature, but not sure the correct way to use it.

[SunsetRunner]

All you have to do is wear your tracker to bed and it will measure sleep automatically.  Next day under Today in your App. scroll down and click on sleep to see details. See your User Manual for more useful info.