Hey there @TruffleExplorer! Welcome to the community! There’s lots of ways you can handle issuing lots of orders at once, however it gets to be dependent on your use case.
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Event Dispatcher
So one of the more proper ways (and a bit more advanced) would be to use an Event Dispatcher, and have all of the enemies subscribe to the event. Then from the Dispatcher you can call for that event to occur and all actors that are subscribed will run that event.
Documentation here:
Tutorial Here:
However if you wanted a slightly easier and less efficient way, you could create an array of actors that you want to call this from and add the enemies to it, (likely when you spawn them), assuming they are of the same class (same enemy type, or derive from the same parent class) you can do something like this:
Though I’d highly recommend learning about Event Dispatchers as they would be invaluable in the future!
Hope this helps!