This article explains how to configure the coexistence platform.

Configuration of the Google Connector

From the coexistence menu, create your google connector:
Google Coexistence Connector

Domain name: Enter the domain that you want to lookup
Service account and certificate: See this article for how to create a Google service account:
http://kb.cloudiway.com/how-to-create-an-admin-account-for-google-migration/

Administrator name: The platform needs a username to impersonate. The service account will query an access token for the user defined here. All free busy queries will be queried with the identity of this user.

Configuration of the Office 365 Connector

Office 365 Coexistence Connector
Domain name: Enter the domain that you want to lookup
Administrator name: User name that will perform all free busy queries. This account must have impersonation privileges.
Password: Password of the account