Controlling PortableApps Launcher without a mouse

Hello,
is there a way to control (especially launch apps) from the PA launcher?

Today I found myself in a rather unusual situation.. my mouse was borrowed by a college and since we don't have spare mouses I had to work for some time without a pointer device.

I was able to work without it with most programs, one of the exceptions was PAL - while I could open with Win+P, I was not able to select the App I wonted to launch, or launch any app from the menu.

It would be quite useful to have an option to operate the PAL with a keyboard (win+p and then cursor keys for launching the desired app), and possibly faster.

Best regards.