Chicks live off the yolk they absorb just before hatching for up to 3 days. So they will be O.K. in the incubator if you are not there. You can take them out and place them in the brooder as soon as they've dried out and fluffed up.
Aim for a brooder temp around 95* in the warmest spot and lower the temperature ± 5* each week, so they will get used to lower temps. It doesn't have to be exactly 5*, it's just a guide. The chicks will let you know what temperature they are comfortable at. By the time they are 6 weeks old they should be fully feathered and won't need the heat lamp anymore. You can then start moving them out, during the day at first and when they're o.k. leave them out during the nights as well.
For the brooder: make sure you have a warm area and a cooler area where they can escape the heat if they feel too warm. Don't put the food and water too close to the heat lamp and place it on something so it's slightly off the floor. Otherwise the chicks will mess it up all the time. I give my new chicks some apple cider vinegar (ACV) in their drink water for the first week or 2. The ratio is ±4-5 tablespoons to a gallon water. This helps prevent pasty butt (poop clogging up their backsides, can be fatal). Organic ACV with the "mother" is the best.
Good luck with your hatch!