How to disable User Choice window on Windows start?

All computers in my office have two accounts: default user and admin. Both have passwords.
Now I've need to make computer to automatically choose user's account on windows logon. (I'm tired of stupid questions like "What this "admin" means? I'm know that admin is better than others, so I'm trying to login into "admin" for two hours, password don't match! What are you done with my computer? Why I can't do anything I want?").

Winplwiz not working for me cause active user password on login is required. Also I don't want to disable admin's account.
Is there any other ways?

Have a look
Is it possible to make only one user profile show to log in when - Microsoft Community

In https://support.microsoft.com/en-us/...gon-in-windows
it says "To bypass the AutoAdminLogon process and to log on as a different user, press and hold the Shift key after you log off or after Windows restarts."
I used do do Start- log off- log in.