For Contour plots, Directivity plots, Contour data sets, and Isosurface data sets, under Levels and from the Entry method list, select Number of Levels or Levels.

If Number of Levels is selected, enter the total number of levels in the Total levels field (the default is 20 for plots and 5 for data sets). Otherwise, enter the values of the contour Levels or click the Range button () to define a specific range of levels.