Place the bag and container in a warm spot in the house. Don’t put them into full sun until new growth appears and they can be removed from the bag. Check regularly to be sure there is not so much condensation on the top of the bag that it is dripping onto the seedlings. If this happens, the potting mix is probably too wet. Replace the bag and allow the potting mix to dry out a bit.
Check your cuttings regularly in case they start to rot before they root. Remove any suspect cuttings as soon as you spot trouble.
Keep the cuttings moist and in a few weeks check for roots by tugging gently on the cuttings and testing for resistance. Once the cuttings have developed roots, they are ready to be removed from the bag and planted into pots of their own.