Where to find or setup jitsi slack configurations

Hi I’m trying to replicate the jitsi-slack and run it on my local but any idea on where to find these configs? I can’t seem to figure out where can I get these configs. Thanks!

JITSI_TOKEN_SIGNING_KEY=<key used to sign conference asap jwts>
JITSI_TOKEN_KID=<key identifier for conference asap jwts>
JITSI_TOKEN_ISS=<issuer for conference asap jwts>
JITSI_TOKEN_AUD=<audience for conference asap jwts>