To use Google Analytics for prioritizing highest-performing content in SND Planner and Autopilot, you'll need to attach the desired Google Analytics view to Social News Desk. You can add multiple views if you manage multiple websites.
As a Manager user, click on "Manage Properties" at the bottom-left corner of the Dashboard.
Select the desired property from the list on the left, then be sure you are on the Property Details tab.
Scroll down to Google Analytics Integration, then click "Add Google Analytics."
Select the Google Account you use to access your GA view and grant permission to SND by clicking "Continue."
Select the Google Analytics view or views you want to add to SND.
The Google Analytics view will now be available when setting up feed rules, in order to prioritize higher-performing content or use data from Google Analytics as a feed source.