Hello,
This Report can do with 2 dimensión and Add the Filter Open_date from Request Detail folder
Affected_resource
Type
Create 3 variables type indicator with follow formula:
=SUM(IF([type] = 'R';1;0))
=SUM(IF([type] = 'P';1;0))
=SUM(IF([type] = 'I';1;0))
Add this 3 variables and affected resource to a vertical block.