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 resize the length, hover over the label or field and click Decrease length or Increase length. Click Save to save your changes, or click Cancel to revert any changes.