Why work pools only refer "is a class group" classes?
A work pool definition says this- Lists the classes that are marked as Is a Class Group
(on the rule form's General tab) for each work pool in which users associated with this access group are permitted to create cases. Each such class defines a work pool, a named collection of case types.
Why only classes marked as "is a class group" can be a work pool but not the classes marked as "belongs to class group" ?