I'd like to know how to merge a column graph with a line graph.


This is what I'd like to do...
I have a 100% Stacked Column graph. Each column shows a breakdown of different levels of priority for the month in percentage equalling 100%.
I then have a line graph with two lines. One is a service level agreement target line and the other is the percentage indicating what was met.
I'd like to insert those two lines into the original stacked column graph so that it shows the target line, the actual line overlapping the column graph.