Subpages are used to present related information linked to the master record shown in the page. A document header displayed in the main page with linked lines in a subpage is a typical example.
Subpage always has a rule linking it to its master page, and it is always updated in response to any action in the master page. In NAV 2016 it is possible to update the master page after modifying data in a subpage.
In current recipe, we will create a subpage presenting the list of actions performed on a certificate.