Using the Deployment Tool's "Update Host Settings" capability
Expand "Active Directory Domains" to locate machines within your OUs, and right-click.
Instead of clicking "Install Software" context menu, click "Update Host Settings" and a drop-down with each configured Product Configuration template appears.
Select the deisred template and click OK - your configuration template will be applied immediately.
The Deployment Tool will attempt the update as the logged-in user (or the user running the tool) so providing a password in the box is required only if the machines are configured to accept connections with Simple Password.
Using PhSetup.exe
Built into the installation directory of each Host is a command-line configuration utility called "PhSetup.exe" and it's used to make changes to Host Settings. The Deployment Tool is now capable of generating PhSetup syntax strings for you. Right-click your Host Configuration template -> All Tasks -> Copy command string to clipboard. For more information on PhSetup and a complete list of arguments please see the Host manual.