Adding Rule-Based Named Set

Under Filter Formula tab, Enter the Filter formula. Use the dropdown below the formula textbox to create it.

Under Filter Formula tab, select the top 10 formula, Measure and the number.

MDX tab shows the resulting MDX.


Adding Not Rule-Based Named Set


Using Named Sets

You can also select a named set in "Add Calculated Field". It will be converted to a member using Aggregate MDX function. For example, "Top 10 customers" named set will be converted to a single member that would represent all 10 customers.