Shelve and Unshelve a WCU
Using the buttons presented in Figure XXXX can be used to "Shelve" and "Unshelve" a WCU, respectively.
When a WCU is shelved it is disconnected from its car, if connected, and removed from its resource group, if any. To mark its status one of the two system labels shelving_in_progress and shelving_done is attached. If one of these labels are present for the WCU it is also possible to "Unshelve" it using the corresponding button. If not "Unshelve":d, the shelving_in_progress-label will remain until all tasks for the WCU have status Stopped and all corresponding measure data is uploaded to the portal. If this process is aborted or if new tasks are added to the WCU with shelving in progress, this label will never be replaced with shelving_done. It is, however, still possible to "Unshelve" the WCU. This will not reconnect it to the previously connected car or resource group but it will once again make it active.