Grid > Sumary with Horizontal Total

Hi,
I’m stuck in a job. Someone have a hint?

A customer requested a Quote Map that contains quotes by supplier.
I generated a Grid application and when viewing the Summary, it is similar to what the customer asked for … but I can’t make it the same.

I only need the grand total, but when I add the total, it is displayed per line as well.
I made this image to better describe the situation.

Anyone knows how?
Thanks.

Good afternoon,

As I couldn’t get help, I decided to create a Blank with HTML. Generating the Table and Totals.

It is not the best solution, but it is supplying the need atm.