Two noob questions - tempo, hold
 

Hi, folks, I also posted this in the general forum before realizing it'd be more appropriate here.

I just got a TI2 Desktop... loving it, so far, but two questions...

In regard to an easy way to adjust the tempo of something, such as an arpeggio, I can't seem to find any way to do it. There's the SHIFT-RELEASE, but that requires two hands, and I'd want to do it while playing. What I'm curious about is the softkeys... I noticed, when going through them, there's a name called "tempo" but I can't seem to find the corresponding action to assign to it. I suspect there's something simple out there (like one of those "control" commands), but I don't know where to start. Interestingly, when I use my Korg Minilogue as a controller (a temporary solution until my new one gets here), when I turn the Tempo knob on the ML, it works perfectly. What command do I assign to a softkey to control the tempo, with one knob, easily?

Also, I know one can use a latch/hold for an arpeggio, is there a way to do this for a pad?

Thanks in advance!