Charging a Subscription to Companies/Agents - by: What No Website

Hi

I'm wondering if it's possible to do the following:

Have a subscription system in place whereby a registered company can subscribe and that company's agents can post properties.

Of-course this would have to apply to individuals registering as a lone agent (not tied to a company) or indeed owners.

I know that the OS Subscription system could in theory set users to specific groups and users who unsubscribe could be removed from the Joomla group but then the question is what do I do with the individual agents and owners.

I suppose what I am looking for is something like this:

--> Company (subscribes)
--> --> Agent (uses the Company subscription if he attaches himself to a company)
--> --> Individual agent (Pays a subscription)
--> --> Owner (Pays a subscription)

Thoughts...?