Add more than one Admin user on Fios Gateway Router???

Hi all. Is it possible to add more than one admin user on the Gateway router? I know on my old MI24WR one, I had added addtional users, but when I go to the advanced --> Users page on the new router, it only shows the "admin" user, lets me change that password, but I don't see anywhere to create / add more users??

Thanks,

S