Ms-access – How to set user-level security in 2007+ MS Access

I've read this MS info which should cover my problem. There are quite clear steps:

1. Open the .mdb or .mde file that you want to help protect.
2. On the Database Tools tab, in the Administer group, click the arrow below Users and Permissions, and then click User-Level Security Wizard.

The problem: I don't see "Users and Permissions" option in the "Administer" group. So I can't proceed. (I use Access 2013, which I don't think that's a problem here.)

In the site, it also says that "you must also use the /WRKGP command-line switch to point to your workgroup information file when you start Access".

And I did exactly that (which should be correct according to this):

"msaccess.exe" "C:\Temp\testDB.mdb" /wrkgrp "C:\Users\ZygD\AppData\Roaming\Microsoft\Access\System1.mdw"

The file loads, I get no error. Any thoughts? Anything I'm missing?

So, the problem is that I cannot proceed in creating user-level-security. This is a step towards creating separate user accounts for the Access DB file. Initially there is only one Admin account, and it's quite a challenge to create other accounts in new versions of Access…