The 'Copy Media Server Configuration' option is not available for Backup Exec 2012.
For BE 2012, it is called 'Copy Settings to Other Servers'
This options will be available under Configuration and Settings menu if CASO license is installed (i.e. for CAS-MMS environments)
Following is an excerpt from the same technote you mentioned above:
If you have the Central Admin Server Option (CASO), you can copy configuration settings and logon information from one Backup Exec server to another. This copy ability allows you to quickly set up a group of Backup Exec servers with the same configuration or logon settings.
See Copying logon account information to another Backup Exec server.
To copy configuration settings to another Backup Exec server
-
Click the Backup Exec button, select , and then click .