Are there some Discord channel to be used where we can all gather when the jam is started? Then we could chat during the event with all the participants.

Great idea! We will make Discord channel tomorrow. I'll make a new topic about it when we have it up and running!

It has been done! I made own topic for ways of communication where we will gather every ways of communication we come up with, and also we made new topic for suggestions, so if you have other ideas or have something else to suggest, please do so!