Difference between users/passwords in [Users] (Brekeke PBX admintool) and those in [User Authentication] (boundled SIP Server)

Password for users under [Brekeke PBX admintool] >[Users]
It is the password to retrieve the user's voicemail, set up the user's voicemail box and log into Brekeke PBX admintool as user account.
Password for users under [Brekeke PBX admintool] > [SIP Server] > [User Authentication]
This is for authentication of UA registrations and incoming calls.
It is needed only when Authentication for REGISTER and/or INVITE is set on at [Brekeke PBX admintool] > [SIP Server] > [Configuration] > [SIP]

System message