Here's an example kit: https://www.amazon.com/HOMENOTE-Misting-Greenhouse-Trampoline-waterpark/dp/B07G33MVJ1/

Making some assumptions about your existing system, in addition to a kit like that, you would need to add anoth irrigation valve for another zone, wire it to the controller (hopefully there is an extra wire already, or else you'll need to run that back to the controller too), then use underground pipe (it would be polyethylene or PVC pipe in the US; I am not sure what's common or available to you) to get from the valve to where you want the misting, then bring it above ground and adapt from the 1/2" or 3/4" (15 or 20 mm) pipe to the 1/4" (8mm) flex pipe the misters are on.