Modify NTP settings

NTP and timezone settings can easily be modified using the commandline.
The right commands for this jobs are tsclockserver and tstimezone.
To add a NTP server with the IP 1.2.3.4 use the following command:  
tsclockserver 1.2.3.4
  To modify the timezone settings to GMT+1 the following command leads to success:  
tstimezone +1
  Timeserve related modifications are in effect immediately whilst modifications on timezone settings require a reboot of the switch to be effective.