Creation of Queues is allowed to PR administrators only through the Settings > Queues tab of Control Desk.
Also, the main configurations are there:
  1. Name
  2. Type
  3. Automatic distribution to a Process and target robots
  4. SLAs (Priorities, Starting points, Deadlines)

There are 5 possible statuses for the Queue Items:
1. New 
This status is given to the Queue Item from the moment it is created, manually through the Control Desk or added by the appropriate action through a Process.
During this status, the Queue Item can be edited through the Control Desk > Queues tab
2. In Progress
This status is given to the Queue Item when it has been retrieved by a Process (either automatically if the Automatic Distribution is enabled or by the appropriate action).
3. Completed
This status is given to the Queue Item if the Process that was processing it was completed successfully.
4. Expired
This status is given to the Queue Item if the appropriate deadline was reached while the status was "New".
5. Failed
This status is given to the Queue Item if the Process that was processing it failed to complete successfully.
During this status, the Queue Item can have it's status reset as "New"

The Queue Items can be manually managed only through the Control Desk > Queues tab, hence you can create custom roles for users that will access this tab of Control Desk. 

A user having access to the Queues Tab has by default access to all the queues and to all features of the same tab. There is not any customization available.
Options available: 
  1. Add a New Item in Queue (manually override default SLAs)
  2. Edit a New Item (manually override previous SLAs)
  3. Set as New a Failed Item
  4. Delete an Item

Finally, note that the Web Console does not have access to the Queues tab.