Is it possible to direct "task notifications" not only to the task owners, but to additional users?

For example: When an approval is denied, a notification is sent to workspace owner... "Task - sent to the approval task owner of the task is denied." Can the "task denied" notification be configured to send to other users?

Yes, Watchers can also receive notifications similar to the notifications project owners receive as the approver(s) complete their approval.

Users designated as Watchers on the approval flow will receive email notifications each time the approver(s) they are in line with complete their review.

In the workflow below, the Watcher will receive notifications when Approver 1 completes their review and when Approver 2 completes their review.

In the workflow below, the Watcher will receive a notification only when the task is fully approved.

Strategic Contracts
Strategic Sourcing
Supplier Information & Performance Management