Using the touch bar in Logic Pro

So I started playing around with this thing. It's too small to play the keyboard on it, but you can set the notes to a scale to avoid making errors. Then there's a little arpeggiator button at the far right, but it doesn't play in tempo! Anyone know how to fix that?

Otherwise, what is your experience using the touch bar in Logic if you've tried it of course.

I haven't really had time to explore it, so I don't yet know if it'll come in handy or not. I was also wondering how one's suppose to customize it? Can't find anything in the drop down menus.

 

Finally a little info. I haven't really attempted to use it, mostly because I'm traveling and haven't been working on music. But I would thought a least a Youtube video would pop up with someone showing how to use it. Nada.