GOautodial Open Source Omni-channel Contact Center Suite

WebRTC option is not showing in MODIFY USER.
https://goautodial.org/projects/goautodialce/wiki/HOWTO_Enable_Softphones_Registration_per_User
how to assign WebRTC particuler USER or Group or Campaign?

Also not showing in :- Go to settings>user group and add the desired user group and assign to users there.