Jigasi limit outbound

I have setup a Jitsi meet server and it works great. I am also able to connect a SIP server and able to make & receive calls. But there are 2 little problems that bother me.

  1. Now i would like to limit the possibility for moderators to make outbound SIP calls. This way i can give more people accounts on the server without having to worry about my phone bill.
  2. I am unable to find the location where i can specify a inbound DID / room number generation.

Does anyone has information about this?