Security Groups are created from the admin Groups page, users can be added to groups from either the Group Update or User Update pages.
Security Groups are used in both OIDC and ProxyAuth.
ProxyAuth
Security Groups are used in ProxyAuth for:
- ProxyAuth Domain authorization
- Trusted Header SSO, a users groups are added to the 'Remote-Groups' header
OIDC
Security Groups are used by OIDC when the OIDC Client requests the 'groups' scope. The OIDC Client may use the groups for authorization itself, ex. Jellyfin SSO Plugin.