This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Yes - all those things are possible. However, you need a real modelling tool rather than a drawing program such as Visio. This is likely to be expensive, so it's always a good idea to first list your requirements for BPMN modelling so that you don't get end up with something that is very powerful, but has many features that you never use.