Sort stacked column by metric in Tooltip

Hello - 

I would like to sort the Job Functions in each column by the metric in the tooltip (Labor Minute) from smallest to largest. In other words, I would like the Job Function with the lowest Labor Minute at the bottom of the column and the Job Function with the largest Labor Minute at the top.

I thought that since Labor Minute was in the tooltip, I would be able to sort the column on that metric, but it is not giving me that option. Is this request possible?

Thank you,