Vanishing Pen - Slide Advance

Hello all,

I'm trying to figure out how to advance powerpoint slides while annotate/vanishing pen is being utilized.  I use a clicker and I've also tried advancing with just the arrow keys on my keyboard (iMac using iOs).  It doesn't work - I understand why.  when you open annotate, you are moving off the powerpoint deck and the clicker can't advance the slides because annotate is the last thing"opened".   there has got to be a way to always have vanishing pen functioning while having the ability to advance powerpoint slides.   any help would be great!