1. Click the Manage All Filters icon in the grid toolbar to access the Filters window.
2. From the Filters window, click the Axis tab then the Change Filter icon next to the Rows or Columns section (whichever axis you want to filter).
3. Use the Expression window that displays to set up the expression for the filter, and then click OK.
4. Click OK in the Filters window when you are done setting up the filter.
See also: Example Expressions for Filtering an Axis and Axis Filter Behavior When Levels are on Opposite Axis.