Is it posible to create a direct call in NC Talk?

Hello NC Community,
my question is. Is it possible to change the list menu for the chatrooms to a direct call?
I try my best since 3 days but i can not find any element that work. After my first mistakes i try to change/add/delete the funktions on the php scripts but nothing work. Hope that the community can help.

NC 21.0.1
Linux 5,4,34-1 x86_64 (Ubuntu) VM
Talk v11.3.2