How do you generate emmitted objects at random times, like in "Space Drones!"?

I wanted to emit projectiles at random times/positions but wasn’t sure how. Any suggestions?

So feel free to open Space Drones up in the editor and take a look. If you check out the “spawner” object in its library, you’ll see that it just has a timer that ticks every second. When it triggers, it emits an enemy and sets a new random x and y position.

I hope this helps.