You can open any template to edit its fields and filters in the Template Editor. You can save your changes, or run the template and exit without saving.
Note: If you modify a stock template's fields and filters, you can click Save Template As to save your changes as a new template. You cannot overwrite a stock template.
The Template Editor opens. The template's fields and field placement appear in the main workspace, but the template does not contain any actual data yet. The Fields and Filter palettes appear in the left panel.