I want to create a group-level summry field which is the value of
the sum of one field devided by the sum of another:


Sum ({Performance.AIRCLNTNET}) / Sum ({Performance.CllsBySpot})


The problem is, how do I insert this at the group level? I have created a
running total field in the Field Explorer dialog, but it requires me to
enter the name of a field to summarize on, and this equation is the sum
of 1 field devided by another.

So how do I do this?

Thanks