I created a matrix report table with the option to drill down in that matrix with the + sign in both columns and rows.
The user can also click on any text-box in the matrix and it actions to a different report with parameters to view details.
Both tables are 1 report and 1 matrix table in different settings of hide/show groups.
In the right table I sent the number marked red is an example for drill through with parameters sales+mary, and aria1+product 2. On the left, the drill through always sends with sales-david as parameter because he was first. How can I drill-through with a parameter that represents the entire group of sales?