To additionally protect the data or files of the different apps on the Huawei smartphone from unauthorized access, we can activate the app lock, which creates an additional unlock password or PIN that is required every time the corresponding app is opened, otherwise access to it will be denied.

Android 10 | EMUI 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Security
Step 3:  Tap on  App Lock
Step 4:  Tap on  Enable
Step 5:  Choose  Lock screen password  or  Custom PIN
Step 6:  Enable or disable  Use Fingerprint ID
Step 7:  Choose several  apps  to lock
  1. Open the Settings
  2. Tap on Security
  3. Tap on App Lock
  4. Tap on Enable
  5. Choose Lock screen password or Custom PIN
  6. Enable or disable Use Fingerprint ID
  7. Choose several apps to lock

Huawei Instructions