I don't understand very well this app 😐
Well, this part is the forums.
On the main page is a list of several different forums.
If you click one, such as
Christian Family Forums, it will bring up a list of several topics, or conversations that are going on. This is not like a live chat were you have to be there to be part of the current conversation. (There is a live chat part to the site, but I don't use it and don't know much, if anything about it).
In the forums you can read and post (as we have done here) at anytime. Once something is posted other people can see it at anytime. Like your above post was at almost 8pm last night (my time, I'm in the Mid West of the US.) I was getting everyone ready for bed, but when I woke up this morning and logged on I could come back to read it.
Don't hesitate to ask if you need help here. There are a lot of friendly users here who love helping out (and know a LOT more about this stuff than me)