There isnt an option to show a 100% Stacked Bar Chart, where the X/Y Axis is Grouped by Month and Group Name.
This shows if the date range is only a month as 100% Stacked Bar Chart but doesnt where the Date Range is greater than a month.
A workaround would be to export and manually produce this in a spreadsheet where 100% Stacked Bar/Column Charts are available as standard. It would be good to provide this so that over a 12 month period, the total resolution by group name can be seen visually.

