You could reverse the left and the right (in which case the lowel crossbar pole would be flipped 180 deg). You could also have the interlinks so that the knobs are in the back of the muslin background stand. I prefer to have them in the front though.

The large picture indicates the correct assembly. If you look at the two close-ups of the interlinks with pro-lights on them, you will see how to configure the interlinks. The first picture is the right side and the second is the left side (both as seen from the front).