SOLUTION ... Utilizes a Pie Chart where Footer for 'Cause of Incident' had for the Column 'Cause of Incident' ...
Detail Aggregation = Default
Summary Aggregation = Default
… and …
'Incident Internal ID' …
Detail Aggregation = Default
Summary A...
Detail Aggregation = Default
Summary Aggregation = Default
… and …
'Incident Internal ID' …
Detail Aggregation = Default
Summary A...