Trouble activating Remove Email Verification plug-in

We're using WP mu for 40+ blogs, one for each of our sports networks. We'd like to PW protect each with a unique login that will be shared by all affiliates.

I was hoping the Remove Email Verification plug-in would allow me to set up a common, shared (by all affiliates) account for each network.

I uploaded the plug-in to the MU plug-ins folder and activated on a couple of sites... but see no change in the Add User options.

Any help will (and patience) will be appreciated.