I would like to use zoho in order to manage leads and appointments for treatments for clinics.

This is what I have so far, I get my leads in the "lead modules" and once they take an appointment for a treatment so I convert them to contacts.

I generate events for each "Treatment seassion" in order to get it in the calendar. 

But here the issue, I would need to associate "treatment sessions" including the date and price for each session instead of products, so I can count how many sessions each patient/contact has received and other statistics.

For instance:

Contact Module: 

name: 

Peter Smith

Sessions:

type -> treatment 1 , date -> 30-11-2015 , price -> 100usd

type -> treatment 2, date -> 7-12-2015, price -> 100usd

...

it would be perfect if I could associate the sessions to the events as well...

any ideas?

thanks in advance,

Daniel