One use for this option can be to stop your kids from watching too much TV by making sure that they are not watching it when they are not supposed to.
To enable this just follow these easy steps:
- go to Devices pane
- double-click on the device you wish to block temporarily to brings up its properties
- go to Access Control tab in the device properties
- tick the "Block device during the following hours" and set the hours
- click OK to apply
The above is yet another feature aimed at making your DLNA streaming experience better and easier. Enjoy!