welcome. I’m fairly new here too.
On changing a set point after starting a cook - I have not found a way to do this. I stop the cook, change the setting, and restart. Not such a problem if it was a preheating step.
Timer - as far as I know the timer is associated with the current step being set.
For example, in a preheat step, the timer in that step will start when the oven reaches the set point (timer starts ‘when preheated’). That is unless you set the timer option to ‘manual’. In which case it will hold the setting until you start the timer. For example, after putting your food in the oven.
The other non-default option ‘immediately’ I’ve not used. Though I can imagine it might be helpful where the oven is at a desired setting like 200 Celsius, no steam and you want to change from rear heat to top and rear to brown something more on the top.
Guide? I watched the introductory video series and I’ve just tried some cooks and then made some very simple programs. I’ll add that it took me a while to figure out how to reorder steps when I got them in the wrong order in a recipe. It turned out to be fairly obvious, just two steps instead of the one I’d expected.
Unsure if they’re automatically made community accessible. I’m hoping not as my ‘reheat croissants’ recipe is…very basic.