Render Queue

Still or Animation Render: Render Queue can render either Stills or Animations.
Set the Current frame or the Frame range you want to render.

Render Active Only: Renders the Scene Camera (marked in Green), similar to the default Blender Render (F12).
Render All Enabled: Renders all "Renderable" cameras (checkboxes marked in Red), one after another.
Render Selected: Renders all selected cameras (marked in Blue), one after another.

Output Path: Set the folder where the image file will be saved.
If the path ends with "\", the name of the file will be the Camera name.
Adding characters after the last "\" will add a prefix to the file name.
That prefix will be the name of the file if using Folder Structure (see below).

In the example from the image, rendered files will be saved as:
D:\Renders\Sunny_CloseUp_001.png
D:\Renders\Sunny_MediumShot_001.png
D:\Renders\Sunny_WideShot_001.png

Incremental Save: Each render will be saved as a separate file, using a suffix number increment (_00X)
Incremental Slot: Each render will be temporarily stored in a new Render Slot, accessible in the Image Editor.

Use Folder Structure: Will create a folder with the Camera name and save the files in corresponding folder. Add a prefix in the Output Path to set the file name.

In the example from the image, if Use Folder Structure was checked, rendered files will be saved as:
D:\Renders\CloseUp\Sunny_001.png
D:\Renders\MediumShot\Sunny_001.png
D:\Renders\WideShot\Sunny_001.png

Overwrite File Output nodes path: Will replace the Base Path of File Nodes to match the Render output path. This allows to render all files in the same folder as the render file.

Background Render: Renders in the Background as a separate process. It will open a terminal / console window so you can check the progress of your render. When the render finishes, it will automatically open the output folder.
The render can be done again outside of Blender by running the generated script file (.bat or .sh can be found in the renderfiles folder)

Export Render Files: Exports your scene so it can render animated Photographer properties on machines that do not have the addon installed, like render farms. Each camera will save its own blend file that you can add to your render farm manager, as well as a script file (.bat or .sh) that you can use for command line rendering on your machine.

• Animated Photographer properties for Cameras and lights will be (optionally) baked into Blender properties. It is advised to not use the exported files as a work file, as some of the scene, cameras and light properties will have received animation keys every frame.

• Exporting Render Files will save your scene before proceeding.

• Exporting can take some time when working on big scenes.

• Known limitation: White Balance cannot be baked, you will require to install the add-on on the render machine to render its animation, or avoid animating it altogether.