On Windows - then if you are on a browser page and have a preset selected, then you can use up and down arrows on the computer keyboard to step thru the presets. I assume it's the same or similar on a MAC.
Also you can automate the Next and Previous arrows at the top of the applications.
You can also use Playlists with programchange or use the above methods in the playlists too.
I can't remember how much you can read in the manuals about this. But you can read some.
