Display BLF PickUp Popup - How?

Hello!

I need help to set our D865 Phones to Display a Message with Pickup Notification. Additional to the BLF-Led Status. Other Manufacturer call them Display BLF PickUp Popup (Fanvil) or Pickup blf visual (Yealink).

If i am informed correct, Snom has similar functionality. Can someon help me to set it correctly? What is the correct Option Name and how is it to set? I tried to search the Snom documentation, but i can not find with this Keay-Words nothing. May be i am asking wrong?

Thank You!