The Users > Settings page provides configuration options for user session settings, global user settings, and acceptable use policy settings, in addition to SSO and other user login settings.
The options to limit user sessions under User Session apply to users logged in using SSO. SSO users are logged out according to session limit settings, but are automatically and transparently logged back in when they send further traffic.
Do not set the login session limit interval too low. This could potentially cause performance problems, especially for deployments with many users.
Changes applied in the Users > Settings page during an active SSO session are not reflected during that session.
You must log the user out for changes to take effect. The user is immediately and automatically logged in again, with the changes made.