Sub-totals for ONLY the date OR ONLY the dimension OR ONLY the correlation in RB

Let's assume one create a report over 10 days with a daily granularity (dates) to filter in 3 specific products (correlation) sold within 2 different campaigns (dimension). Although, one don't want  to see each product quoted 1 x 2 (each campaign) x 10 days, but just the total number of units for these 3 products alltogether, by campaign by days.

As of now, the sub-total once enabled would sum up all the campaigns and all he products together, showing only an overall number per day. It would then be great to detail at what level we need the sub-total (dates / dimension / correlation)

Antoine.