The packager helps installing OCS Inventory NG Agent for Windows (or any windows application). It create an executable package including multiple files to install, and is able to run the installation process under the specified account having Administrative privileges.
https://github.com/OCSInventory-NG/Packager-for-Windows/blob/c65661d54490c044cb706e32c49c89ee00c6c68a/Packager/instocs.nsi#L154