Custom Destinations


I’ve got 2.4 up and running nicely… but now I’d like to add a custom app (eg wakeup)… I know the custom destinations module is where I’m supposed to do that but I cannot find documentation on it. There is nothing in the Quick Picks dropdown cause it’s a fresh install. How do I use the new interface to add an app?

Sorry if this is posted somewhere but I’ve been searching for the last hour unsuccessfully.

Thanks for your help,