Solved
How to hide a column in Revenue Cycle Explorer?
According to this article (https://community.marketo.com/MarketoArticle?id=kA050000000KyvgCAC), I should be able to right-click on a column header to hide the column from my chart. But when I right-click on a column, I see none of these options. The column field (which is actually contained in the "Rows" area of the interface - this is another confusing issue) is identified in the image below. I still want to filter on this data, but it doesn’t need to be contained in the report.

