Hi
Hope this workaround works for you, I am not able to create another series for total of pending and active in the same chart, but able to create a separate chart for Month which creates the total of Active + Pending and places besides the chart which shows numbers of active and pending for the specified month.
Steps:-
*Create Group MontName,Status, Insert Summary for Number of Status in MonthGroup footer which will give you sum of Active+Pending.
*Then Create the new chart based on the Group and Place it next to the chart based on Cross Tab.
*Suppress the sections which you don't want to be shown in the report.
Hope some one here has a better solution......
Cheers
Rahul