Cordial Greetings Friends,
Again here by asking teachers...
As I can create a relationship like that between modules Contacts and Accounts.
That is, what I want is to create a relationship between a custom module and the module Contacts, the relationship is evidenced by a field contained in a panel and is not necessary to see in a subpanel.
In each record in the Contacts module, a field where it is reported that this account is associated contact, and do not need to see it in a subpanel appears.
Thank you in advance for your answers.