If anyone is still searching for an answer to this:
First off, you need to add the individual cameras to the “Camera Cuts” section. To do this, place your marker on the frame in which you want to add the camera cut. Click the + in the Camera Cuts section and select the camera. This should add the shot to the timeline and will automatically cut to the camera selected. You can test this by selecting the camera icon adjacent to the + and clicking play.
Now, we just need to tell Movie Render Queue to render all cameras. MRQ has a camera setting that you will need to activate in the settings panel (Check the screenshot above “Exports”). Select the “Render All Cameras” box and it will render each cut.
Be sure to check the warnings on this setting as well.
Hope this helps!