The upper part of the view shows the list of deployment tasks and related information, such as the name of the master image that will be deployed by the task.
The list of deployment tasks is divided into three categories:
One of these tasks may be already running and waiting for the machines. If none of these tasks is running, you can start any of them manually.
To start any of the deployment tasks manually, select the task, and then click Run on the toolbar.
The lower part of the view shows the machines that are related to the selected task. The list depends on the type of task.