In order to use Remote Desktop, you have to set up your local computer (the one want to connect from) and your remote computer (the one you want to connect to) for this service. In other words, you are working from home and want to connect your home laptop (local) to your campus workstation (remote).
Below are articles, organized by operating system, that will help you set up your local computer.
It is not possible with ITS supported software to connect to a remote Mac machine unless you also have a local Mac computer. There is the option of third-party software, such as TeamViewer; however ITS will not provide support in these instances.