OneOfficeERP provides an integration with Google Contacts in order for all users to synchronize their Google Contacts with OneOfficeERP.
In order to allow a synchronization with Google Contacts, you need to authorize OneOfficeERP to get Contacts data from Google. Google Contacts Integration is set up with the following steps:
Push to Google Contacts is checked.Creating a Contact in OneOfficeERP:

It will be shown in Google Contacts:

Pull from Google Contacts is checked.