I have a category heading merged over category1, category2 and category 3 columns. I want to be able to have a dropdown list so the user can filter by the elements under category1, 2 or 3. In addition i want them to be able to have a drop down list on the Category headings that is merged over the 3 columns. I can't figure out how to do both levels at the same time. Thanks for the help.


1 to show the categories Red, Blue or Green. That way I can see filter out all the rows that don't have a green or blue blue entry. Thank you for the help.

