If you use SSO (Single Sign On) with your UnionCloud website, it is possible to add some additional content to your login page. 

This could be useful to promote something you're doing, to use as an ad space or to include important information about logging in. 

If you use UnionCloud's translation plugin, you can also also translate this message. 

By default, it reads: Students will Sign In using the University portal.

To edit this message, navigate to: Admin > Setup > Messages and Emails > SSO Integration > shibd_registration

Click 'Edit' on this message and change the content.