D-Link DFL-600 - Manual (Page 65)

Click the box under the Add heading to add the BlockWeb Policy Rule to
the StudyTime Policy group. Click the Apply button to make the entry
current.
Click the Back button to return to the Policy Add page.
Setting the Policy Global Status
Now we need to configure the Global Policy Status. Click the Global
Policy Status link
− from the Policy Add page − to open the following page.