Dino arena

hi again :slight_smile:
Ive got a briljant idea last night…
What if I could get a dino arena, inside my map…
now, ive tried it, but the dinos spawn whenever, wherever you spawn…
Im looking for someone who can tell me what i can do (im a noob btw)
Or make a working script, when a player enters a box, waves of dinos spawn