Hi,
I have problem.
In analysis I have columns like: Year, Months and measure.
Measure is MEASURE_1#1 from rpd and it has MAX aggregation (set in rpd).
It look like:

Now I want to add second columns and create formule where:
for 2017 M12 I want SUM (m10+m11+12), for 2017 M11 I want sum (m09,m10,m11) etc.
How can I do this?