Use OAuth to connect Google Campaign Manager 360 by navigating to Destinations > Create New > Google Campaign Manager 360.
First click "Connect a Google Campaign Manager 360 account", log in with your Google account, and click "Allow." You should then see this message in the Hightouch UI:
You would need to have access to at least one profile and one advertiser in Google Marketing Platform to sync data.
Each conversion should be associated to a Floodlight activity and a specific configuration. Our syncs provides a dropdown to select which
activity is attached to all conversions, or you can select a column for an activity ID and another for the configuration ID, if you prefer
to upload conversions from different activities in a single sync.