Sub-Total in amount column

Hello,
I have Multiple Items and divided to categories and want to do sub-total for each category?
can it be?

That is not possible. Since you are using lines for labels, you could manually calculate subtotals and put them in as part of those lines. However, if you apply a tax code, the tax amounts will appear only at the bottom, so you would also need to manually calculate and add taxes. This hardly seems worth the effort. Think about it: how often, if ever, do you receive invoices broken up into categories from suppliers and merchants?

Thanks for you replay @Tut