Cropping black squares on Premiere Elements 11 - Support

[frasers79801912]

Hi all,

I'd like to crop black squares on a video I'm currently editing, but am limited with what I can crop using the Elements cropping tool. I've tried applying an editing mask to feature all 3 participants on the video, but have had little success. 

Any support would be great. 

Here's what it looks like currently:

[Steve Grisetti]

If you can create an object in the size and shape of what you want to see (white object or shape on black background), you can use the Track Matte to cookie cutter out what you don't.