Citrix Metaframe & USB printers on a Thin Client

I have a network running Citrix Metaframe. One of the staff’s PC blew a power supply and I needed to get her running. This was done quickly with Citrix on a HP Thin Client. Only problem was that she had a personal printer (HP 1020 Laserjet) connected via USB. She needs this as her job is HR an confidential reports/employee details are printed.

I cannot find how to allow this printer to be connected.

Any help would be appreciated.