Change Base to Enemy in the right list.
You can put various enemies if you complete many stages in Play mode.
Adjust the position and the rotation of enemies in Select Mode.
Enemies attack the player.
Put the goal. It is in Base.
You can post your stage to the world and find it in Find mode. However this is a tutorial, so press "No". (If you have a confidence in the stage, post it!!)
The first tutorial is ended. You can also see other tutorials to learn how to make rooms, lifts and so on.