Final answer:
A Personal queue type is created when you add a user to Dynamics 365, meant for individual user management, as opposed to System, Escalation, or Shared queues.
Step-by-step explanation:
When you add a user to Dynamics 365, a Personal queue type is created. Personal queues are specific to individual users and allow them to manage their own list of items that they need to work on. Unlike a System queue, which is used for organizational-wide workflows and process items, a Personal queue is managed by the user it is associated with. In contrast, an Escalation queue is typically used for automated routing of items that need additional attention based on certain criteria, and a Shared queue is used to distribute workloads among multiple users or teams.