Histograms on Excel Mac 2016

Hi, 

The new histogram feature on Excel 2016 is really interesting and showing lots of potential, but I can't find any way for me to determine what my bins are, how many bins I should have or what size they should be. It seems to automatically determine the number of bins.

Is there a way around this, or is this going to be rectified in future releases?

Thanks,

Colm Ryan