Gently slide one arm of your angled tweezers into the recess near the upper right edge of one of the feet.

You can also use the point of a spudger. However, you're more likely to damage the foot, if you're reusing it.

Use your tweezers to pry up and remove the foot.

The feet may eject very quickly—be careful not to lose them.

Repeat the process to remove the remaining feet.

To install a foot, align the pegs on the bottom with their cutouts in the frame and press the foot into place.