Volumes can be attached to an existing cache task, and if successful, they will be immediately cached under this task. To join a cache task, click to highlight the cache task entry in the Cache Task List section, and then click on the 
icon button in the command toolbar.
A "Select Volumes" dialog will pop up as below. Select volumes that you want to be added to this cache task, and then click Add.
If successful, selected volumes will be cached under the specified cache task.
