Hmmm, there may be a better tool out there specifically for family trees other than Visio. You could manually add blocks since each generation is different in number.
Hey - When i open Visio in the web to edit the symbols, then go back and work in the desktop/excel sheet, and refresh, the symbols disapear... How do i autmatically update the excel datasource table to rocognise and remember these new symbols? Cheers