You can work with usages interactively from the Edit Model Object List panel in the following ways:
Use option 91 to expand usages for a selected model object. The Display Model Usages panel displays showing usages for the selected model object. Note that the Scope field is set to *NEXT.
Note: This is the recommended method to work with usages interactively.
Press F20 to prompt the Display Model Usages (YDSPMDLUSG) command for the named model object list you are editing. In this case usages are not expanded for the model list entries before the Display Model Usages panel displays. Instead, the list is converted as explained in step 1 of the following example. Note that the Scope field is set to *NOMAX.