How to Convert a Primary Manager into a Secondary Manager?

To convert a primary manager into a secondary manager, first set a secondary manager as a primary manager using the procedure explained in How to Convert a Secondary Manager into a Primary Manager or Vice Versa?. The only change in the procedure of How to Convert a Secondary Manager into a Primary Manager or Vice Versa? would be that instead of removing the original entry in the [PRIMARY] section of the eg_managers.ini file, copy the entry to the [SECONDARY] section.