The G Suite Data sync setup is available in Automation features. Choose the preferred option from the dropdown menu. We highly recommend to use the Add/remove Users option by default.
If you’re not sure about what possibility to choose, check the detailed article about their differences.
The article omits one method specific this menu: "OFF (manual synchronization only)". Make sure you don't have this one picked if you want to utilize the synchronization. The purpose of this method is to "pause" synchronization if you plan some changes in G Suite but don't want them to be reflected right away.
Now click Set and it’s all done!
Daily G Suite Data Sync is an important prerequisite if you wish to automate setting up signatures to new (or moved) users for Credits or include new users to Subscription.