Hello and welcome. Congregations on your new friend. It needs to be set to the finest mist possible and run for one to two minutes twice a day. I like mine to get a chance to warm up under the basking lights before I water but many do it first thing. Make sure it’s hitting leaves as they like to drink water off of leaves but will often do it when you aren’t there. Also misting allows them to clean their eyes and helps trigger the drink response. If you have fake plants in the cage, they have to go as chameleons especially females like to nibble of plants and plastic can cause and impactiation and death. Plus they can’t drink off of plastic and it lowers the humidity. Good luck to you. You should have a full husbandry done here once you have pictures of the Cham, cage, lights, supplements etc. it’s always best to start off right as we all know how much misinformation is out there.