Sometimes you just need to quickly view costs from a different angle such as total cost for a given set of categories over time. We recently released an enhancement making it super easy to pivot your report's x-axis data dimension or stick with the default time series layout. In the example below, the default time series layout shows categories and service description costs over 30 days.

You are now able to choose one of your groupings as your new x-axis dimension, category in this example, to view total spend in each category over 30 days.