In Certificate Management, entity classes provide a way to manage certificate issue and renewal for a class (group) of entities with common characteristics, for example Endpoints.
From System Manager Release 8.1.3, you can add, edit, and delete the entity classes by using the page. Endpoints that have certificates issued by System Manager can use these entity classes to send certificate enrollment or renewal request to System Manager. The entity class password set is used to authenticate enrollment requests from endpoints to System Manager.