Once you have created a new derived result, you can graph it directly from the Draw dialog (see 5.2 Drawing graphs), or include it in new graph definitions (see 5.13 Defining graphs and tables).
If you subsequently decide you would like to change the definition, simply return to the Define Results dialog and alter the definition entered in the Definition box. You can click on the Commit button to check and confirm the new definition, without closing the dialog – any graphs containing this result will be updated immediately to reflect the new definition.