Firebase predefined roles are the curated Firebase-specific roles that enable more granular access control than the basic roles (formerly called "primitive" roles). You can assign more than one role to each member.
By using predefined roles, you can grant different access levels (Admin versus Viewer) as well as breadth of access (individual products versus groups of products).
Product-category roles: Roles which grant full read/write or read-only access to groups of products. They are structured around Google Analytics and general product categories.
You can assign the Firebase product-category roles using the Firebase console.
Note that, when needed, predefined roles automatically include permissions which are: