can i record more than one meeting at the same time by using jibri?
yes but you need as many Jibri instances as simultaneous recordings
so is it possible to have many jibri instance in one server?
It’s possible using a containerized system (Docker or LXC). You will need ~4 cores / ~4 GB RAM for each instance
can i set subtitle in jitsi?
Yes, you can. Look into Jigasi for transcription (closed captioning).
how can i configure jigas