I have created a private referrals category as a sub-category of CoTech and made @aaron an admin.
The CoTech Private category is private see the padlock icon, you can only see it because you are in the Members group. Topics (threads) can be created by Members in the private categories.
Note that we can’t create threads on Loomio until the subscription is renewed, we can only post to existing threads.
There is a custom Co-operative form field that people can complete already, see this thread, I’m not sure if we could change that to display next to member, but you can see displayed when you click on someone’s icon — is that good enough?