I was wondering how Windows determines what gets displayed in the navigation pane?

I saw this:
This PC in Navigation Pane - Add or Remove in Windows 10 - Windows 10 Forums
Drives in Navigation Pane - Add or Remove in Windows 10 - Windows 10 Forums

But that is just for the PC.

At work, I got the Quick access, Dropbox, OneDrive, This PC, and Network.

Co-Workers computer got all that, and a shortcut to his D Drive. (I didn't).

At home, I got same as my co-worker, with the D drive shortcut (and ignoring my 4 other hard drives)

These are not removable drives, these are regular fixed drives. (At work, C is SSD, D is a mechanical drive), at home, C/D are my SSD, the other 3 are mechanical drives), all plugged into the motherboard.

I know according to the tutorial above, it looks like I can add all my hard drives to the navigation pane, but is there a way to add only certain drives?