Make sure your wireless MAC has been registered on the ACM network
This page explains how ACM members, and authorized guests, can setup access to the ACM's internal WiFi network. This network shares similar properties as the LAN network, but is located on a different subnet. If you are trying to add wireless access for an device owned and managed by the ACM, please instead reference to this page as the procedures are not identical.
The ACM CA cert file can be downloaded
Unzip the the file for use.
For wireless security in network manager
It should then connect, although the first time may be slow to authenticate.
Windows 8/8.1 should be about the same procedure with a different interface to get to the initial dialogs
Connect to the wireless network and enter your ACM username and password when prompted