Hello!

I have 3 modules connected to each other:

Agents

Doctors

Patients

Each Doctor has a (unique) related agent; each Patient has a (unique) related Doctor.

Fig. a - Doctor Module

Fig. b - Patient Module

On the Doctors module, I can see ALL the patients connected to them. At the same time, on the Agents module, I can see ALL the doctors connected to them. 

I'd like to create a Related List also between the Agents and the Patients. I can create a list using the reports, but Id' like to create function that returns the related list between Agents and Patients. 

Fig. c - Agent Module view

I looked around the website and community too, but I really don't know where to start! 

Can anybody help me?