Many to many contact relationships

Many to many contact relationships

Hi there

I am trying to create the following in Zoho CRM:

- Doctors can have multiple team members - and both contact types can be invited to an event

I have triedapproachesoches:
1. doctors as the default contact module, with a custom module for team members - this issue with this is that I cannot invite custom module team members to events
2. I then tried adding all the doctors and team members as default contact module entries with a new field for contact type (doctor, team lead, etc) - but I cannot see a way to link a many-to-many relationship between contacts in the same module.

Any help is appreciated