How do I make a cutout for an outlet or light switch?
Since the panel’s base is wood, you can do a cutout from the back of the panel. The cutout should be the size of your electric switch/outlet box. Then, gently cut through the upholstery (be careful not to cut too much, you don’t want the batting from underneath to be visible), pull the box through, and place the outlet cover as you would normally do on a regular wall.
(Use a jigsaw for wood cutout and razor knife for upholstery.)
For a simpler fix, a flat plug extension cord fits in the space between the panel and wall.