I took a peek at phpmyadmin on my core from work to refresh my memory.. If you want to research using an "invisible" scenario (command group) to do what you need, look at pluto_main:CommandGroup, then look at the FK_Array field. Now look in pluto_main:Array. You will notice that there is an entry with a primary key #25... Misc Scenarios (non visible). Any command group defined with FK_Array=25 will not be shown on the orbiters and can be treated as a command group in a pure sense. Doing it this way, you can execute a single command group which will in turn fire all of the commands defined within it. The command group can be fired with command #370 (Execute_CommandGroup).
Also, while poking around, if you look more at the Array table and the Template table in conjunction with the CommandGroup table, you will see that there are a lot of neat tricks already built into the "Scenario" system
Now -- With that background out of the way... You can define your own Misc Scenarios in the web admin by going to Advanced->Configuration->Scenarios.... I don't know how many peple have used this feature, but it should work just fine for you