I need help making random objects spawn at random times

Help Requests
1 
 So i have a game were you are supposed to fly upwards and shoot the blocks out of the way but i don't know how to make random objects spawn at random places at random times

can someone take a look thanks https://flowlab.io/game/view/835578

2

If anyone could help i would appreciate it.

3

Check out these blocks in the help section: random, timer, and spawner

4

ok