Data here:
What I expect to see: I want to sum the value for each member and approving person to put in the same row. For example: Maria was the an approving person who has 2 paperworks under review and 1 paperwork under in the office. I want to put combine the value that Maria had in the same table as the staff.
I would like to know how I write the query to support my work for SSRS. I tried:
=COUNT(IIF(Fields!Staff.Value \<\> Fields!Approving_Person.Value, Fields!Staff.Value, Nothing))
I know the query wasn't right, would you please help me with this? I am not sure I need to have public code to make the table I need works.


This will be much easier in your dataset query.
If you use something like this
Then you will get a single list of Staff and Status which you can then easily build a matrix from.