Final answer:
To set up the WDS server for a Windows Server 2012 multicast installation, configure the server to disconnect slow clients, set the specific UDP port range, and create a multicast transmission named 2012 Install that starts at 8:00 PM when at least 2 clients request the image.
Step-by-step explanation:
To configure a Windows Deployment Services (WDS) server for installing Windows Server 2012 on new computers using multicast and scheduling the installation to start after 8 pm, you need to adjust the WDS server properties and create a multicast transmission. Firstly, configure server properties to disconnect clients slower than 500 Kbps and set the UDP port range to 64124 to 64224. Then, create a multicast transmission named 2012 Install using the 2012 Datacenter image you previously added to the server. Set the transmission to start when a minimum of 2 clients request the image, and schedule it to begin at 8:00 PM on the current day.