To help UC with user management, UC should delegate external user administration to its partners. This will allow UC to grant permission to its partners to create new users or reset passwords for partner employees without involving UC's administrators. UC can use Delegated External User Administration, which is a feature that allows UC to assign specific users as delegated administrators who can manage external users in their own accounts.

Two ways the consultant should associate the articles with topics are A and D. Topics are keywords or phrases that help users find and organize content in Experience Cloud sites. To associate articles with topics, you can select the appropriate topics on the Knowledge tab within Lightning Experience, which allows you to view and edit articles in a list or Kanban view. You can also manually add one or more topics to each article within Workspaces, which allows you to create and manage articles in a collaborative environment.

CK should keep in mind that Salesforce CDN is not supported in sandbox environments. Salesforce CDN is a feature that allows CK to improve the performance of its site by caching static resources on servers that are closer to CK's site visitors. However, this feature is only available in production environments and not in sandbox environments, such as Partial and Full sandboxes. Therefore, CK should not use Salesforce CDN for its UAT process.

This option allows UMS to reduce the call volume by providing customers with self-service options, such as knowledge articles, FAQs, case management, chat, and feedback. The Customer Service template is designed for this purpose and offers a responsive and customizable layout2

One possible cause of this issue is that the sender's email address was changed and not verified. The sender's email address is the email address that appears as the sender of the welcome emails to the customer users. If the sender's email address is changed, it needs to be verified by clicking on a link in a verification email. If the verification is not completed, the welcome emails will not be sent.