Campaigns / using non-standard CRM Contacts to link to Marketing Contacts

Description

We are using CRM, but not the provided templates for our Contacts Board, since it has too much integration to the rest of our system - however, Monday seems to have hidden some key automations that mean its very difficult to make the sync work between ‘our’ Contacts and Marketing Contacts (the provided board in Campaigns)

What are you trying to achieve

Anyone else struggling with integrating Campaigns in to an existing workflow?