It is not recommended to update the COE table names on the ua_entitlement table.

To change the COE name that the end-user sees, you will want to update the table label under System Definition > Tables.  It is not recommended, nor is it necessary, to update the table name since only the label is displayed to end-users.

You will also want to update the COE labels on the HR Case interceptor if your are using the scoped HR application prior to Kingston.  This is the "What kind of HR Case would you like to create?" screen displayed prior to the case form.  Kingston introduces a UI Page that provides a better agent experience and eliminates the need to use the hardcoded COE selection from the interceptor.