Assuming you only want each computer to run one tournament at a time, you can set this up in at least 2 ways:
1. Set up a template for each type of game (which means configure a tournament for a specific game type, then save it to a file in the templates directory before you start he clock). Load whichever tournament type you want to run out of the templates directory, then do 'save as' to a file in the saves directory, this way on game night you can run any type of tournament you like without having to spend time reconfiguring everything. The template files will not affect stats because they are not in the right directory.
2. If you want the users on game night to have less to figre out, you could save another copy of TD for each game type, and set the default tournament file to a pre-configured game of the given type. Then you can do a short-cut to each of these with whatever names and icons you want from the desktop.
(if you want to run more than one instance of TD you can get different types of games going at the same time with option 2, but otherwise I'd avoid it, and Corey would probably not recommend changing the stting that locks TD to one instance on a gven computer at a given time.)
Also if you survived reading all of that, your cash games can be configured as if they were a tournament with unlimited rebuys, no prizes, and no automatic reseating. You could even manually assign a prize to a player equal to whatever they cash out for at any time. (manual prize option) This would also track the total you should have in your cash drawer at any given time, and could be used for a per-buy-in rake if you use one.