If you have social logins – and you want users to use those instead of setting up local accounts then you can set the HidePasswordLogin setting on your turnkey site.

The “Register” link will not show and the Social Login Icons will be added to the main menu for direct access

See HeaderBasedAuthenticationTag for more settings on Account actions

Settings relevant to organisations that want to provide a single sign on experience

• HidePasswordLogin - as described above
• AllowUserToChooseSocialLoginEmail - when registering the local account on first time loggin - should the used email be editable or taken from external userid?
• SkipExternalAccountConfirmationScreen - the screen were the local account is confirmed the first time may be skipped
• OpenIDConnectScope - the normal "openid profile" is used if you do not provide your own, consider to add "email" to the list if available at IDP