Server plugin installation and removal is described in Configuring and administering the server.
Once a plugin is installed, you should check that the plugin is enabled for each job node you wish to make available for users to run that particular task on. To do this:
- Go to the Job Distribution tab in the master nodes web administrative interface
- Click on the link to each job node
- Click in the box by the relevant task, marking it with a check mark if you wish to enable it.