Sales territory planning with RegioGraph Planning 2009
While the ability to plan territories based on accessibility was already a highlight of the previous version of RegioGraph, this feature has now evolved further. The new version of RegioGraph allows users to create a comprehensive sales network based on its accessibility (via existing transportation links) to their business locations. An additional sales territory planning feature is the ability to calculate substitutes for external sales force regions. For example, should a sales representative leave the team, RegioGraph 2009 can recommend how best to assign this representative's sales area to the team members responsible for adjacent regions. Existing customer-representative assignments can also be automatically taken into account in order to avoid reassigning key accounts when optimizing or planning new sales territories.

Source : http://www.gfk-geomarketing.com/fileadmin/newsletter/pressrelease/regiograph2009_en.html