I have a some ideas on setting up a portal for my resellers to post their potential customers and keep notes on their sales acheivements...
what is the best way to do that.
setup a new user role and assign their sales teams to their own groups? I think i am looking at it as;

Reseller A
- Sales member A
- Sales member B

Resller B
- Sales Member A
- Sales Member B
- Sales Member C

I want to be able to view all Reseller stuff... but i also would like to make sure Sales Members of a reseller can only view Reseller A stuff... not B or C, whatever...

What is the best method to set this up... i also have my own sales team that has their own set of roles.