Zoho Desk Extension - Connection to Zoho CRM - List/Display quotes

Zoho Desk Extension - Connection to Zoho CRM - List/Display quotes

This should be a straight forward extension, but I would be interesting in understanding the steps:
  1. Extension loaded into desk.ticket.detail.subtab - "View Quotes"
  2. User views Ticket (#10000)
  3. Extension Queries Zoho CRM and find Deals where the custom field (Ticket-ID) matches #10000. I now have the dealId
  4. Extension QueriesZoho CRM and get a collection of Quotes associated with dealId
  5. Display a table of the relevant quotes associated with the Deal, and thus the Ticket
I have a sample extension working, menu option and the desk.ticket.detail.subtab is displaying the page.

What should be my next course of action? Or next steps?

Do I create a connection in Sigma for Zoho CRM? 

(When i try, I receive an error)