Cannot Add or Delete any Printers using Big Sur on MacBook Pro

Trying to help someone using macOS Big Sur 11.7.10 on a MacBook pro 15" Mid 2014.

She cannot add or delete any printer, (there are several in the que of different manufactuers), I get a printool pop up box asking for "_ipadmin" username and password. I have tried the computer admin name/password without success. When I cancel the PopUp the add or delete process fails. When I tried to Reset the printer system by right clicking one of the printers that option is on the menu but grayed out and unavailable.

I tried to using the instructions to add the user to the Admin group as follows

1. Click the Directory Editor tab.
2. Open the Viewing drop-down menu and select Groups.
3. In the search box, type print.
4. From the results, select Print Administrators.
5. Click the Lock icon next to Not authenticated (which is located under the Directory Editor tab) to unlock the section. Enter your Mac user name and password.
6. Select GroupMembership. Click the (+) Add button next to the GroupMembership line. You won’t see it if you did not unlock this section.
7. Enter the user name that keeps seeing this printtool pop-up message. In the text area underneath the list, replace “new_value” (which is already selected) with the user name, like stacey (in our screenshot, the user name is macReports.com).
8. Click Save, then quit Directory Utility.
9. Restart your Mac.

Here is what it is supposed to look like

But on this computer there is no "Print Administrator" category listed only "Print Operator" and "Print Services"

so I am at a loss as how to proceed. Can the Print Admin category be added manually (and if so what info is needed?) or is it no longer used in Big Sur? I could use some help I am not very familiar with this OS.

Any suggestions ?