From the training library page, you can perform quick edits on any training instance by using the context menu in the training row.
Context menu for the UDAAP training on the right
The context menu allows you to:
View the training instance
View the training details
Nudge the learners of this training
Quickly Edit some settings
Quick Edit
Quick edit experience for the UDAAP training
Once the quick edit option is selected, you can easily modify due dates and assign or unassign this training from everyone in your organization.
Should you want more fine grained controls like assigning or unassigning specific learners or setting due date overrides, you can view the training instance and perform those actions there.