As far as setting it up, I would disregard the suggestion to put it in CPAP mode. Simple put in AutoSet mode with a 6 cm minimum. The maximum can be left at the default 20 or set to 15, whatever you prefer. Keep in mind it is unlikely to go anywhere near that pressure. All you need to do over the first few days is see where the machine wants to take the pressure and what you get for event flags. Then you can refine the settings. No need to do any kind of manual titration of pressures. The SleepyHead charts will tell you what pressure you really need.
I would discourage the idea of starting at 5 cm and increasing 0.2 per day. 5 cm for most people is too low a pressure and it can give you a suffocating feeling. No need to torture yourself with that. 6 cm is an OK minimum but with experience you may find you want it even a bit higher.
Hope that helps some. Good luck!