In the Collection Settings dialog box, select the users or groups with whom you want to share the collection.
Select the role for a user or a group to match their global role. For example, assign the Editor role to a global editor, the Viewer role to a global viewer.
To make the collection available to all users irrespective of their group membership and role, make it public by selecting the Public Collection check box.
However, non-admin users can be restricted from creating public collections, to avoid having numerous public collections so that system space can be saved. Organizations can work with Adobe Support team to configure this capability on specific accounts.
A user's role governs access to the assets and folders inside a collection. If a user does not have access to assets, an empty collection is shared with the user. Also, a user's role governs the actions available for collections.
AEM Assets Brand Portal Administrators can share and unshare a collection or a smart collection with authorized users. Editors can view and share only the collections created by them, shared with them, and public collections.