Create password for room

hi, i’m using 2 plugin
https://www.npmjs.com/package/react-native-jitsi-meet/v/2.1.1 (for mobile react-native)
https://github.com/jitsi/lib-jitsi-meet (for website )

i have a questtion:
i can’t find the api to create password for the meeting room.
help me pleas
sorry for bad english