Separate buttons for different visio drawings on taskbar?

[Hari]

All open word documents have separate buttons on taskbar. Similarly, all
excel workbooks have separate buttons on taskbar. How do I get separate
buttons for different visio drawings?

 

[Scott]

I don't think there is a way...unless you start multiple, separate instances
of Visio. The reason is that Visio uses the MDI (if I recall, it stands for
Multiple Document Interface) style user interface. A few generations ago,
Word did the same thing. But MS changed most of the other Office products
over to use separate windows per document -- but not Visio.