I am have script same as the groupon.com.
But now, it has one admin login option to all the access of the back panel, so I want to restrict it by building a superadmin (access to anything) and admins (where they can have access to all except website's settings, i.e. posting deals and adding cities and so).
The website was built with cakephp, fyi.
Please offer time and cost that you can handle this.