u/Aggravating-Buy-1695

I am making a grocery/gas station purchase. Is there a way to use the 2 $10 grocery credit instead of $15 first? The app defaults to $15 credit and I cannot select the $10 credit I want to use.
My purchase is only $10 and I’d rather use the $10 credit than miss out and not fully use the $15 credit, which can use for a $15 flat purchase for a restaurant.