You can control access to Library content using Group permissions. When uploading a piece of content, you select the Group(s) that should have access to the content, and only Users in the selected Groups will see the content in the Library.
File Upload Edit Screen- Groups
You also have the ability to assign content to one individual Organization, and only the Users at that Organization will see the content in the Library.
File Upload Edit Screen- Organization
Tips & Best Practices:
- It's important to remember that permissions are assigned on the file/document level and not the folder level. This means that Users only see folders in the Library that contain content assigned to the Group(s) and/or Organization they belong to.
- You can assign Library content to Groups in bulk using the Library Report. The Library Report contains a list of all the files in the Library, and you can access the report by going to Library > Reports > Library Report. Switch to the list view select the checkboxes next to the documents that you need to assign Groups to > Actions > Add Group Access. You can also remove permissions using the "Remove Group Access" option.
Library Report - List View