Setup the function keys (speed dial)

To configure the white buttons adjacent to the phone screen, open https://isb2.wildixin.com/collaboration/ login and go to Settings. Select the Fn keys menu from the left-hand side.

You can remove Lines 1 and 2 - the default setup - and add a Colleague. 

Change the type of function to Colleague, add an appropriate name (it will be visible on the phone), and search by name or input the extension. Do not forget to click on the eye to stop the notifications from popping up whenever your colleague is on a call and press Save at the end.

If you want to add a non-colleague phone number, change the type to Speed dial and add an appropriate name and the number. Do not forget to press Save.