Yes the Change Auditor Win32 client may be installed on multiple workstations. The steps to install the Client are the same for a workstation as for the Coordinator server.
The installation of the Client can be run from a network share following the same steps as for the default installation or you can copy the Client .msi from the downloaded installation media folder '...\Installation\x64\Quest Change Auditor Client (x64).msi' to the workstation. Then open a command prompt as an administrator, browse to the Quest Change Auditor Client (x64).msi and run the install.
Please note the Change Auditor Web Client is available as an alternative to the Change Auditor Win32 fat client. The Web Client provides most of the functionality except for some management operations such as agent deployment:
