Well it’s a little difficult to find much information about the Mercedes Benz COMAND system as you can no longer buy it, it’s been replaced by MBUX.
What the site says above about the function of the COMMAND system are:
“• Connect to WiFi: Built-in WiFi is optional for many of the new Mercedes-Benz vehicles. This feature, coupled with COMAND®, allows you to browse the internet using the display and central controller.“
Here are the instructions for operating the functions of the COMAND system.