Currently, there is no facility to create a sub-process from a single Excel table. Instead, you have to create separate tables and then manually link the separate flowcharts in Visio. It would be great to have the ability to do everything in one table and have them separated out in Visio through off-page references, as this facilitates the presentation of complex diagrams to external stakeholders. Usually these are sent in PDF version as most external viewers would not have a Visio license. The off-page references help easily navigate the sub-processes within a PDF document as they act as clickable links.