How to switch users from the lock screen

I have 2 admin users on my Mac book pro running 10.14.5 MacOS.

When one of them doesn't log out and the screen locks ( or manually using Shift cmd Q ) it is not possible to login as user 2 is user 1 is the locked account.

I have tried google and playing with the settings but cannot find an option that would allow the lock screen to switch to a different user and login