To create a field not already provided in the Mustang List default fields, go to List and click on Custom Field labels.  If you have more than one list, you’ll need to select the list for which you’d like to create the custom fields first.

Beginning with Text Field 1 type in the name of your new custom field. Use a subscriber-friendly name if you use the Subscriber Update form and plan to enable this field for subscribers to edit.

To make a custom date field, where the data will be a calendar date, use the Date Fields provided under the Text Fields.

Click Update Custom Field Labels to save your new fields. Upon saving the new fields, a red message will appear at the top of the page announcing that the custom fields were updated. You can now resume working in Mustang List.