Modules and plugins are pre-installed when you installing EasyDiscuss 4 on your site. In a case where you skipped to install these modules and plugin, you may run Discover to install it back on your site.
Discover Modules & Plugin
Navigate to Extensions > Manage > Discover. Click on Discover button located on top left beside install button to discover them. Select the desired module & plugin to be installed, then click on Install button to install them on your site.
Add New Module
Navigate to Extensions > Modules and click on New button at the top left of your site. There will be a list of available modules on your site. Locate the desired module and click on it. After finish configuring the module, click on Save and there you go.
Publish Module & Plugin
Publishing module or plugin process is quite easy and there are several ways to publish it. Go to Extensions > Modules or Extensions > Plugins and locate the particular module or plugin which you wanted to publish. Click on Status Icon () located next to it to publish the module or plugin. As for publishing multiple modules or plugins, click on checkboxes beside it, then click on Publish button located at the top left of your site.
Unpublish Module & Plugin
The process of unpublishing module or plugin is quite effortless. Go to Extensions > Modules or Extensions > Plugins and locate the particular module or plugin which you wanted to unpublish. Then, click on Status Icon () located next to it to unpublish the module or plugin. As for unpublishing multiple modules or plugins, click on checkboxes beside it, then click on Unpublish button located at the top left of your site.
For further information, check out Joomla Module documentation.