The conversation wall is a social media chat; attendees can publish there, comments, pictures, links, and emojis.
There is no option to moderate any comments, but any message can be deleted later from the Content Management by the Admin.
You will be able to create different communication channels to create different conversations for instance, by subject or by attendees´ groups.
Click in Channels Tab, and add the new one you want to create (screenshots below).
In the Channel page, you will need to introduce the image you want for it, and the group of people who will have access to publishing comments. If the Group of people field is empty, the channel will be visible for all the attendees, e.g. if the channels are only going to be created by subject.
Is not limit of channels to be created.