Unify Enterprise Edition is designed to work on a Windows environment only. However this does not mean that you cannot use it on a MAC.
You can use Unify Enterprise Edition on a MAC by any of the following methods:
1. Use it via the Parallels system on a MAC
2. Use it on a virtual machine that emulates the Windows Environment, on your MAC
3. You can look at hosted platforms like Right Networks & NovelASPect that can be accessed via a browser on the MAC