you'll probably need some kind of randomization
you may need to change this up depending on how many spawn bricks you have, but this is one way to do it
create a 4x4 grid of 1x1 bricks, on each one put the event onprojectilehit>namedbrick[spawnX]>setplayertransform[relative]
put a 4x4 brick above the 1x1 bricks, and name it teleportplayer
on the button that the players currently click, put onactivate>namedbrick[teleportplayer]>spawnprojectile[0][0][-5][radiowave][0][0][0]
if done correctly, the player should click the button, somewhere else out of the map it should shoot a projectile down, hit a brick, and teleport the player
the brick hit should be random