|To assign an application|
Open Group Policy Software Installation.
In the console tree, right-click Software installation, point to New, and then click Package.
In the Open dialog box, use the search boxes to find the application you want to deploy, click the Windows Installer package, and then click Open.
In the Deploy Software dialog box, click Assigned, and then click OK.
To complete this procedure, you must have Edit setting permission to edit a GPO. By default, members of the Domain Administrators security group, the Enterprise Administrators security group, or the Group Policy Creator Owners security group have Edit setting permission to edit a GPO.
The Open dialog box shows the packages that are located at a software distribution point that you specify as the default.
If the Windows Installer package is located on a different shared network directory, navigate to the correct software distribution point in the Open dialog box, click the package, and then click Open.
Administrators are responsible for securing that location using technologies such as IPSEC and using file servers with mutual authentication such as Kerberos to prevent spoofing or tampering on the wire.