Konica Minolta bizhub PRO 950 - Manual (Page 137)

Mac OS 9 Printing
bizhub PRO 950 Printer Driver 8-7
Hit TAB to move to the password field, then enter the password.
To confirm and leave User Authentication, hit TAB or click the green
Confirm button.
To cancel User Authentication while you are not yet finished, uncheck
User
Name (or hit the ESC key to cancel the Print dialog).
User Authentication with Keychain
To use User Authentication with the Keychain, perform the following steps:
Select File » Print, then select the Workflow panel.