Although I've been with Ning for some years, this is my first attempt at a post here. Please be kind if I get stuff wrong!
I want to convert my http://walesairnetwork.ning.com site into multi-level membership:
1. Basic - the usual Ning offering, free
2. Enhanced - same as above but paid for, with access to events and discounts
3. Premium - including 1+2 but with a mailed membership card and access to a stack of freebies I'm pulling together.
4. Corporate - 1, 2, 3 but with the ability to add up to, say, 20 people at level 3 at a reduced overall rate.
Has anyone else done something similar? Your advice on how to approach this complex requirement would be warmly welcomed,