Walking pad that's easily movable?

I've been considering getting a walking pad for my desk at work. I have a hybrid desk that can go up and down. The problem is that I really don't like just standing. I do it for about 30 minutes a day but I have a habit of locking my knees and it becomes uncomfortable.

I want to get a walking pad but I will need to be able to move it out of the way when I want to sit down. I work in a cubicle so I don't want to embarrass myself by struggling to move it out of the way when I'm ready to sit. Are they light enough to move easily? Should I look at a folding one? Any recommendations or experiences are appreciated.