Usage of Pentaho Administration Console (PAC) Password

Hi. I am new to Pentaho.
It may be a silly question. I search online but didn't get an answer.

After logged into PAC, I added some users and their passwords. The question is that, where would those users can use their username and password. I tried looking for a user interface which allows the user to log in into their account but can't find one.

So, what is the purpose of creating users if there 's nowhere they can log in?

Thanks in advance.

pikachew