Is there a way to summarize two columns in the report and show the amount in the Dashboard component?

To be clear:

I want to show on y axis two columns but summarized together. 

X axis Deal owner

Y axis Sum of Deals + Sum of Fees (for ex) but I want these two mutually showed under some new name for ex (expected amount)

Is there a way to do this, been looking for hours now but have no solution.