I can tell such a resource?
The similarity to online chat for a specific group, where can write only 1 person, and the other only view.
Or program for broadcasting on a network computer screen...
I raised this sort of thing, for training sessions, BBB
Dudley_Gulgows answered on March 23rd 20 at 19:11
Create a channel in the telegram.
collin_Altenwer answered on March 23rd 20 at 19:13
Under these conditions it is suitable for almost any chat, and it for such behavior to resolve user rights, for example, in IRC you can do this a bunch of ways to make a channel with silence, making only one "op" (poluotok), giving voice only to the right party, to put all incoming Mut, etc.