LaunchDarkly does not support automatic provisioning of new team member accounts. If new team members attempt to log in for the first time via the LaunchDarkly website, they will get an "invalid e-mail or password" error. They will not be automatically routed to login via your Identity Provider.
To add new team members, they must access a LaunchDarkly application set up in your Identity Provider to initiate the first login to LaunchDarkly in order for the account to be created. Once that step has been taken, they will be redirected when attempting to log in via the LaunchDarkly website.
Read more about user provisioning in our documentation here.