Rotate the camera and add the polygons as shown to make the right side.

Now we can click the "Create Prop" button in the Group Editor window.

Let's name it "Frame1" and now we can ...

Select the Box and Delete the Box prop.

Next ... filling in the "holes" ...

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019