On the Options tab, you can set configurable options available within the virtual machine. These options are available only when VMware Tools is running.
To enable an option, check its check box. You can enable and disable:
You should enable this option if you notice that time does not elapse inside your virtual machine as fast as it does in your host operating system.
You can synchronize the time between the guest and host operating systems only when you set the clock in the guest operating system to a time earlier than the time set in the host.