Add contact to CRM without two-way sync DESK

Add contact to CRM without two-way sync DESK

Hi,

For our company we cannot use the two-way sync DESK <-> CRM, because it will fill our CRM database with loads of unusable leads/accounts. Therefore we have set the sync to one-way. Though, in some cases we WOULD like a new contact to be added (to an excisting account in CRM) from Desk to CRM, so I'm trying to set up a custom function which will check if all Desk contacts match the CRM ones. We don't want accounts or leads to be added or updated, ONLY contacts. 

As I am quite new to customer functions I was hoping someone can help me get started with this.

Many thanks in advance!

Kind regards,

Edith de Neef.