Looking for logging into the Ubuntu As Another User site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Ubuntu As Another User site. After that you can login as usual with your login credentials.
https://askubuntu.com/questions/222984/can-i-log-in-with-other-users-account
https://unix.stackexchange.com/questions/3568/how-to-switch-between-users-on-one-terminal
https://www.lifewire.com/switch-user-su-command-3887179
https://ubuntuforums.org/showthread.php?t=2363654
https://linuxize.com/post/how-to-change-user-password-in-ubuntu/
http://manpages.ubuntu.com/manpages/bionic/man1/su.1.html
https://www.howtogeek.com/261417/how-to-change-your-user-account-in-windows-10s-ubuntu-bash-shell/
https://superuser.com/questions/1114398/cannot-login-to-any-user-on-ubuntu-16-04-1-other-than-guest
https://bugs.launchpad.net/bugs/1769221
https://kb.iweb.com/hc/en-us/articles/230241728-Using-the-su-command-and-switching-from-user-to-root
https://stackoverflow.com/questions/48103850/mysql-login-as-root-works-for-one-ubuntu-user-but-not-another
https://www.tecmint.com/enable-and-disable-root-login-in-ubuntu/