Adding custom fields to panel See the overview of customer-defined fields in the M3 Application Foundation User Guide.Note: This personalization is not applicable in list panels. Open a program. Double-click any record. The detail panel of the program is displayed.Note: In User Settings, set the standard option to Change or Display first. Select Tools > Personalize > Custom Fields. Drag and drop a custom field to the panel. To change the width of the field, rest your pointer on the added field and click Decrease width or Increase width. Click Save.