If you have selected several assets where one or more of them are already being watched, and if you choose to watch the selected set of assets, CentraSite immediately initiates the Watch action on that set and ignores the assets that are already watched. Similarly, If you have selected several assets where one or more of them are not watched, and if you choose to unwatch the selected set of assets, CentraSite immediately initiates the Unwatch action on that set and ignores the assets that are already not watched.