If you don't know how to use this password effectively.
You can input the pw in various fashions.
1.) You can input the pw into the console of the game.
By hitting the `~ key which is above the Tab key and in front of the 1 key.
While the game is active on your pc.
Then enter password a space and then the password
e.g. : ~password whateverthepasswordis
2.) You can download a program called hlsw. Which will let add the server ip and the SM password. While also having the feature to connect to the designated server.
You can download this program here Link ->
Clickable HLSW Link