Manage CMS Workspaces and Channels
Where: This change applies to Lightning Experience in Essentials, Enterprise, Performance, Unlimited, and Developer editions.
Who: To access Salesforce CMS and create content, you must be a Salesforce admin or have a contributor role in that CMS workspace. To create CMS channels and workspaces, enable the Manage CMS Workspaces and Channels user permission.
How: The Manage CMS Workspaces and Channels permission is enabled by default for Salesforce admins.