How can we configure information or warning messages on the Self Service Procurement landing page?

Hi Team,

We would like to display custom information or warning messages on the Oracle Fusion Self Service Procurement landing page to communicate purchasing guidelines and important announcements to users, similar to the message shown in the attached screenshot.

Could you please clarify:

• What configuration steps are required to set up these messages?
• Can this be configured using standard functionality, or does it require an extension or customization?
• Can the messages be restricted to specific business units or user roles?
• Can we control when the messages appear and whether users can dismiss them?

Please share any relevant documentation or setup guidance.