AFAIK the measure is automatically calculated against all the dimension in a straight table, trying to understand your need, are you changing your dimensions through some variable or filter? I normally see needs to skip few chart dimensions or utilize aggr to have dimensions other than chart dimensions.
That was what I thought it should be doing as well. I'll show the example. The aggregation function I'm using is actually an IRR() with an ordered aggr() by months to ensure my cashflows are correctly sorted. I have two dimensions in my straight table for this example. I have 3 different measures.
The first contains the correct answer and aggrs() by the two dimensions in the table + months: