Where is Xiaomi mix2 fingerprint lock?

Xiaomi mix2 fingerprint lock on the back of the phone, the setting method is as follows:

Open Xiaomi's mobile phone desktop, find the settings, and click Open.

In the settings, find the options of screen lock, password and fingerprint, and click Enter.

You can find it in lock screen, password and fingerprint options, and fingerprint management options, which is fingerprint lock.