First, head over to https://app.datatrics.com/integrations/campaignmanager/. Click on the "Install" button, and you will be redirected to the settings screen:
Click on the Connect to Google Campaign Manager button, login to your Google Account, and authorize Datatrics to manage DoubleClick Digital Marketing conversions, view and manage your DoubleClick Campaign Manager's (DCM) display ad campaigns, and view and manage DoubleClick for Advertisers reports.
After allowing Datatrics to access your Google Campaign Manager Data, you need to select the right account on the integration settings page.
Datatrics will use the Google Campaign Manager integration to create floodlight tags based on Datatrics Campaigns, Journeys, and Segments.