To include a sorting control with a result list, you must do the following:
1. Establish the desired metadata columns as managed properties in SharePoint (see “Establishing Custom Properties in SharePoint”).
2. Configure the relevant managed properties as sorting properties for Ontolica (see “The Sorting Properties Page”).
3. For each relevant result page, place an Ontolica Search Summary Web Part that is configured with sorting enabled and with an XSLT template designed to implement a sorting control. See “Ontolica Search Summary Web Part” for details about how to make these settings.