How to add the custom links or Single Sign-On service links to the portal just link bookmarks?

HENNGE Access Control provides such a service.

Users can create bookmarks of the most frequently accessed Single Sign-On services.

The portal will display links which the administrators have configured.
(Users cannot change the links on the portal.)

HENNGE Portal URL: https://ap.ssso.hdems.com/portal/[domain.com]/

　[Reference]
　Microsoft 365 Portal: https://portal.office.com?domain_hint=[domain.com]
　Outlook on the web: https://outlook.office365.com/owa/[domain.com]/

　Gmail: https://mail.google.com/a/[domain.com]/
　Email DLP: https://console.mo.hdems.com/#/[domain.com]/
　HENNGE Secure Transfer: https://upload.hdedrive.com/ui/[domain.com]