I need a simple membership site. It doesn't even need a signup form – only a way for me to create accounts via an admin area. This site will be used as a way for some of our sales groups to track their sales rep's pending business. We are currently using Google Docs Spreadsheet for this but we can no longer use it because when each group logs in, they can see the other group's business. I'm not aware of any way to fix that using Google Docs.
I don't need bells and whistles. I only need a way for each sales group to login and view their business and their business only. I need an easy way to update each sale's groups accounts via the admin area. Maybe there's already a 3rd party script that could do this but I don't have time to search for it.
If you have any questions, I can answer them via private message.