Delete a Custom Field
On the main menu, click Maintenance > User Defined > Custom Fields.
To select the field to delete, click the blue margin cell next to the field. The row appears selected.
Press the [Delete] key and then click Yes when prompted to confirm the delete action. You are cautioned that the field will be removed from any contact, client, or employee record using it.
The field is deleted.
If you have finished making changes, click OK to save the changes and close the window.