Does anyone know what permissions I need to give a user so that they can
create NDPS printers?

The user in question tries to create an NDPS printer in NWAdmin and it just
vanishes, it works fine logged in as me so it must be a rights issue. The
user is a member of the Manager and Brokers mangers list, he is a trustee
with supervisor rights over the printer OU and also has complete permissions
over the NDPS directory on the server.
What else is there?

Ta in advance