You can import an Asset package in the Package Manager window:
Package Manager 창을 엽니다.
패키지 범위 드롭다운 메뉴에서 My Assets을 선택합니다.
The list view displays any Asset packages that you have purchased.
If a large number of Asset packages appear in the My Assets list, you can search for a specific Asset package by name or version number.
Select the Asset package you want to import from the list of packages. The Asset package information appears in the details view.
Click the Download button if it’s enabled. If you haven’t downloaded the Asset package to this computer or device before, the Import button is disabled, and you need to download the Asset package first.
While the Asset package downloads to your computer, a progress bar appears beside the Import button. A Cancel button replaces the Download button you clicked.
다운로드가 완료되면 Import 버튼이 활성화되고 Download 버튼이 비활성화됩니다.
Click the Import button to import the selected Asset package.
Import Unity Package 창에 이미 선택되고 설치 준비가 끝난 패키지의 모든 항목이 표시됩니다.
임포트하지 않을 항목을 선택 취소하고 Import 를 클릭합니다.
Unity puts the contents of the imported Asset package into the Assets
folder, so that you can access them from your Project window.