How do you make 3 stacked columns of info for each date in Excel
 

I need help. I am trying to chart 3 groups of information for several dates.
I would like to have 3 stacked columns (percentages) with the dates at the
top of the chart the names of the groups at bottom of the chart and the
legend at the right of the chart. Does anyone have any secrets. I am able
to get one groups info to chart but I am unable to get the other two groups
in the same date without stacking their information on top of first group.