To add a time server
Right-mouse click on the PlanetDNS Client icon in the system tray and select Properties...
Click on the Time tab.
Check mark the Synchronize my computer's clock option.
Click the Add button. The Add or Modify dialog will appear as shown below:
Enter a hostname or IP address in the Hostname or IP Address field.
Enter a short description or name of the time server in the Description field.
Press the OK button to complete the process.
in the system tray and select
tab.
clock option.
button. The Add or Modify dialog will appear as shown
below: 
field.
field.
button to complete the process.