Plugins Folders Structure
A Plugins Folders which are not immediately visible but include an advanced camera and various other tools
To be able to see any plugin content in your project you will have to enable show engine and show plugin content in the content browser:
The easist way to navigate to the plugins folders is through the outliner found on the left side of the content browser. There will be a lot folders in this section. Once you have selected a folder in the left outliner you will see the plugin content. It is important that you do not edit the files in a plugin directory since they are local to your machine only so they won't show up for reviews, and repairing any mistakes is a lot harder than editing files in the content folder.