How to dis-illuminate my Versa 4

[Hoepfner]

I have trouble finding a way to dis-illuminate my Versa 4 watch face at night.  Can anybody give me a hint.  During my trial and error I learned that I am supposed to make that change on my tracker, not through my phone, but I can't find "settings" on my my Versa 4.  My eyesight is getting dim, so I may have missed something.  Help is appreciated.

Moderator edit: clarified subject.

[JuanFitbit]

@Hoepfner , A warm welcome to the Community! Thank you for your message and efforts. 

Just to avoid confusions, you want for the Versa 4's display not to turn on during the night/while sleeping or you just want it to be a bit dimmer?
For the 1rst one, from the clock face, swipe down to access the quick settings.
You could use, sleep mode or don't disturb.

Or if you want to change the brightness, from the quick settings, you have also access to the brightness. 

Tap on each setting to change it

[Hoepfner]

Thank you. My local Walmart guru fixed my Versa to my specs. Thanks for
the feedback. Much appreciated. Have a wonderful Memorial Day.

[JuanFitbit]

@Hoepfner , Thank you for your reply. I'm glad that Support in Walmart could help you further. Do you remember what was done? If so do you mind describing this here, so that others can try it by themselves ,  should they encounter the same situation. 
That would be very appreciated.