This is what it looks like on Centreon 2, that you should see in the next beta release:

Macros

A new "Macro" tab has been added to the host and services configuration pages, and the '+' button allows you to add as many macros as you want. Even though the macro looks simple on the screenshot, the actual content of the configuration file is more like this:

define host{
                 host_name                  Centreon-Server
                 use                            generic-host
                 alias                           Monitoring Server
                 address                       127.0.0.1
                 _MACADDRESS              00-2F-3C-17-98-3B
                }

And the macro has to be called using the following syntax : $_HOSTMACADDRESS$ You can already imagine all the generic stuff you can do with your commands thanks to these macros :)

More information about macros can be found here