Hi Naveen
When you review the Aux Copy Job in the Job Controller, the streams tab should provide details on the Jobs that is currently being copied across.
Likewise with Aux Copy when it is triggered it will always try to copy the oldest Backup first.
Assuming that you are using "Scaleable Resource Allocation", you can also restrict the amount of Jobs that are being Copied at a given time, giving more ganular control on resource allocation.
Hopefully that helps
Thank you
Winston