To see your choices, click on the pictures on the right side of the screen. When you see what you want to use, drag it to one of the flashing blue spots. If you want to delete something, click on the little X next to the doghouse at the bottom of the screen. When you're ready, click the doghouse in the bottom left corner. This calls the puppy out of the doghouse. Then you can see if the puppy likes his new yard!