So this is exactly the situation that Yaware was developed for. TimeTracker Network Setup.
After the startup, the network is scanned and displays a list of computers included. Different colors are defined by machines that are currently not included or under operating system management from Windows.
It also displays information about the status of the service Yaware.TimeTracker and if the client is installed, it is current version. To install or remove a client plugin for multiple computers at the same time, press the right mouse button and select the menu item.