I have a printer that does n-up printing.  Selecting the feature requires
several keystrokes or mouse clicks in the printer properties page.

I would like to set up different printer drivers for my printer, one for 1-
up, one for 2-up and one for 4-up.  To print 4-up, I could simply select
that printer in the print dialog box.

However, in the printer control panel, you can't copy a printer.  When I
select a printer, those options are grayed out on the edit menu.  Copy is
not an option on the right click context menu.

When I try the add printer wizard, it asks if I want to replace an existing
driver.  I tried renaming my first definition, but that made no difference
in the wizard.  It told me I was replacing a driver.

I don't see why Windows would object to duplicate printer drivers.