How to organize a text online broadcast?

Question

Work organization

There was a need to conduct an exit seminar.
During the seminar, a lot of questions arise, which can only be answered by specialists "on the ground".
You can't bring all the experts with you.
We see the following way out: we put the screen, we display the question / answer tape on it.
We give listeners a link to the interface.
No registrations, everything is free, everything is for simplicity, as user-friendly as possible.
The listener writes a question. Experts see the question, discuss, answer.
The question with the answer appears in the feed.
There is a suspicion that this is all very simple. We are looking for a free system, preferably.
Loads are small, seminars are irregular.
Who will advise what?

Answer 1

@Natann google docs in chat mode? without registering?