The Third Person Controller UI is designed to be as easy as possible to bring into your own scene. The first step in bringing the existing UI to a new scene is to copy the Canvas GameObject from a demo scene.
You can then paste this GameObject in your own scene. When you hit play the UI components will automatically point towards the character who has the "Player" tag. If the item or crosshairs is not showing make sure you have referenced the sprite within the Item component of the equipped item.
Most of the UI components do not need any modification for a new scene. The one component which you may need to modify is the Item Wheel. Each slice within the Item Wheel needs to know which ItemType it is referencing. If you have created new ItemTypes then you'll need to make sure you update this component.
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