I am currently using a streamer to create multiple polygons, but I want the player to be able to see them on radar/map just like gang zones. How can I do this?
Impossible since gang zones only consist of rectangles. If the zone has only 90° corners you can combine multiple gang zones together seamlessly, but it is not possible to create diagonal edges. If you really want you can create the illusion but it will look jagged and will of course contribute tremendously towards the limit.