1. From Setup, enter Permission Sets in the Quick Find. Then, select Permission Sets.
2. Click one of the Inbox standard permission sets, Inbox With EinsteinActivity Capture or Inbox Without Einstein ActivityCapture. The Inbox With Einstein Activity Capture permission set gives you access to Einstein Activity Capture and the Activities dashboard. The Inbox setup assistant guides you through the steps for setting up Einstein Activity Capture.
3. Click Manage Assignments to assign the permission set to users.