Preventing QV from showing partials sums for certain columns (e.g. dates)
If you expand the data expressions with the + symbol you should be able to set the background colour expression to rgb(255, 255, 255) and that should make those columns white regardless of what level they are at.
To suppress the totals appearing for the date columns you probably want to explore the SecondaryDimensionality function (see the help text for details). With this you should be able to put in an if statement that suppresses the totals.