[jitsi-dev] Information inquiry

Good evening,

I am trying your application and I would like to know some of its features:

Is it possible to record the meeting and keep it private?
About meetings, is there a limit of time?
How do I invite participants? Do I use a link? Is there a limit of
Does it let me to share my screen?
Is it possible to handle attendees participation by switch off/on their
Are all these services for free?

I would appreciate very much knowing about jitsi funtioning,
thank you in advance,