Enabling Active Plug-ins
Active plug-ins can be enabled and disabled at each to the hierarchy levels, Site, Group, and Page. To use a feature on a page you may need to enable it.
Right click the page that you want to use the plug-in in, and choose > Properties...
The page will show a list of plug-ins that are active for this page,
if the plug-in you are seeking is not in the list, them click the "activate more plug-ins..." link and you will be presented with a list of available plug-ins
To include a plug-in click it in the left hand side and click the right arrow.
Now that the plug-in is available to your page, you need to use it.