Form code and name available for custom field of type Selection form

If you define a custom field of type Selection form, you can add both the field containing the code (Selection form_Lookup) and the field containing the name or description of the selection form (Selection form_Name) to a custom tab. In the code field, use Lookup with Edit mode enabled to display the selection form (for example, Parts); the field containing the name or description of the selection form cannot be changed. Each of them can individually be placed on the tab (see Custom tabs, Filling Custom tab by using the Field Chooser).