Map Access DB data to a XSD schema

I have limited experience with XML and need to map data from an access database to an XSD schema to generate an XML file in a required layout. All records are listed intead of grouped by year, company, person, and address which omitts the redundant data elements.

I am unable to apply the same to of grouping to the XML data as required by the layout. Is this a mapping issue or an characteristic that can be revised directly on the XML file?