Hi Mark Hutchison,
You should already be able to change your view from Actual to Calendarized or Normalized data for the Benchmarking charts. Does my attached screenshot help at all?
Just wanted to update this thread. Here's the dropdown in the Groups module which allows the user to pick between Actual, Calendarized, and Normalized data. Keep in mind that we do not normalize cost data, so the "Normalized" option won't appear in the dropdown for Cost benchmarks: