The idea is to create a new function to do this:
When you have a macro with multiple commands to run, something like "alarm in thirty minutes | alarm in an hour | alarm in two hours", running a script function like BFS.VoiceBot.CommandTriggered will return the string of the command that I just said.
This way I can create a macro with multiple functionalities by looking at the command text.

If this already exists, how do I do it?

Yes. The idea is that the script can parse which command has said the user, so I can type multiple commands in the same macro, and then be able to know which command was said.