Is there a way to communicate an announcement through the supplier portal?

Summary:

How can I communicate a policy change to a vendor through the supplier portal? Is there a way to allow the vendor to acknowledge a policy change?

Content (please ensure you mask any confidential information):

Please provide guidance on how I can post an announcement, bulletin, etc. in the supplier portal on a policy change and have the vendor acknowledge the change.

Version (include the version you are using, if applicable):

N/A

Code Snippet (add any code snippets that support your topic, if applicable):