Reports

Redmine already has a good query builder — on the Issues page, the Spent time page and the Projects page. What it has no way to do is keep one as a named report you re-run on the first of the month, hand to somebody as a branded PDF, or have arrive by email every Monday. Reports does that by reusing those three builders rather than inventing a fourth: the filter row here is the filter row from the Issues page, so a relative date like "this month" means the month you press Run in.