you need random number generation and use if elseif or switch or (arrays and indexes) to check where to teleport this thing
something like
local places = {
{x=123,y=321,z=7},
{x=321,y=123,z=7},
{x=213,y=312,z=8}
} -- array of possible places
local placeId = math.random(1,#places); --...