Now that we have our GameBall Prefab and our layers and Tags are set up, we can finish our skee Prefab by carrying out the following mention changes:

• skee: Click on the root skee object. Change its tag to Skee and its layer to SpatialMapping Collision. When the dialog asks if you would like to change the children as well, choose No, this object only. The reason for this choice is that some of the children need to have different collision options.
• ScoreBoard: Go to skee | UI | ScoreBoard and change the tag to ScoreBoard.
• SkeeSpawner: Go to skee|UI| SkeeSpawner and drag the GameBall Prefab from the Project view to the SkeeBall Prefab box in the SkeeSpawner component:

• BallSpawnPoint: Change the Tag to Spawn Point and Layer to SkeeBall.

With that, select the root skee object and hit Apply in the Inspector. This will save all the changes that have been made. Once that is accomplished, select skee in the Hierarchy view again and hit the Delete key.