Version v0.42 of Metabase is no longer supported. Check out the docs for the current stable version, Metabase v0.63.
Setting up Single Sign-on (SSO)
We recommend that you set up Single Sign-on for your Metabase installation.
SSO for Metabase Open Source Edition
SSO for Metabase paid versions
With paid versions, you have more options to help manage lots of people and groups.
Read docs for other versions of Metabase.