Custom Rows Say Gross Profit in Matrix Table

Hello Everyone, I will really appreciate it if someone could help me in following regards.

Here's the situation

Matrix Table Right Now Shows

I’m not being able to Rename the Totals individually. I have following issue.

• If I do Row Per Header if I change one into Total Revenue and all of them turn into Total Revenue except from the last one.
• Also, I’m not being able to add calculated row of gross profit after the Total of Direct Cost. I did it in measure, but its I’m not being able to bring it as a Row.
• Similarly, I cannot add say “Profit before Overheads” after the total of Other Income and before Overheads.

Things I tried:

• Adjusting my relational database model to include separate table for Revenue, Direct Cost, Other Income and Overheads relating them to transaction table
• Added Measure to see if I could use it as row in matrix table, which I couldn’t.

In, one of Youtube Video, I saw someone just calculate gross profit by an ‘EDIT’ option in Matrix table and added a row and put formula in it just like excel. I can’t seem to have that function.

I want to create my matrix table as follows:

Note: I'm using Desktop Version Right Now

Thank You