[Bamboo Knowledge Base]
Bamboo automatically assigns a plan's jobs to the build queue when the plan is triggered and no agents are available to run them. The build queue is displayed on the Current Activity tab of the Dashboard.
If you want to prioritise one job build over another in the build queue, you can manually reorder these jobs in the build queue. This will not force a job build to run immediately, but will promote it in the build queue. Your job build will still require an agent (which has the capabilities to meet the job's requirements) to become available. Similarly, you can demote a job build in the build queue if you do not need it to run urgently.
Bamboo administrators can reorder plans in the queue. To do this, use the icon to move the plan to its new position in the queue.