ScreenshotMonitor is great for installing in an office to see where employee’s time goes. Note that you can NOT do it in secret – the employees will know that the program is running and tracking time and screenshots – and that is a good thing.
Screenshot Monitor settings in an office can be a bit different than the configuration used by a freelancer. In an office a manager may choose not to show notifications – this is set by manager on this page. And then we would recommend setting the desktop application like below: