Instrument Selection in Duplex?

Does Duplex have an instrument selector, in the same way it has a track selector? I have of course looked through all of the Duplex applications and don’t see one. I just want to make sure I’m not missing something.

I do realize I can map prev/next instrument via normal midi mapping, but was hoping to map instrument selection to a grid in the same way I have been able to with track selection in duplex