Sometimes managed clients can add a printer, but then they cannot print to it. Here's the specific sequence of events:
The issue affects these products:
Users of Mac OS X managed client computers can add printers in Print Center, but a user-added printer does not appear in the Print sheet of any application, unless the printer is connected directly to the client computer's USB port.
In Workgroup Manager, an administrator can make additional printers available to specific users, groups, or lists of computers using the Printer List pane of Printer preferences.
Note: If "Allow user to add printers to printer list" is not selected, an administrator password is required to add or remove printers in Print Center.