Link to more than 1 CPT

Hi,
I’m building an Events website. The idea being that a business, performer or organizer can list their event for free.

I have installed the Events addon and have Events and Places linked successfully.

I have created 2 more CPTs (Performers & Organizers) that I want to link to the Event. So, a user looking at an event can see who is performing and who its organized by. Furthermore, when looking at a Performers / Organizers page, a user can see their linked Events.

I have spoken to GD support and they have told me that this currently isn’t possible, but could be coded. Thread can be found here.

Anybody out there able to help me?

Thanks for reading,
James