Adding user to whitelist

[ARandomGuy]

I've a remote server and I've enabled whitelist. 

How can I let ppl create their own account (Playername + password) and after that put them in whitelist?

 

Actually I'm doing it manually  via RCON and doing so I need Playername, password and steamID

[Škopík]

Server/servername.ini 

# Add unknown usernames to the whitelist when players join. Clients will supply their own username/password on joining. (This is for Open=true servers)
AutoCreateUserInWhiteList=true

OR 

you can user SQL SW for editing db/servername.db where you create only username, and when an user try to 1st login he will choose password by himself. Also steamID will be filled into DB automatically. Google it, for step by step tutorial