In order to move elements randomly, you can use a Random Number Generator Interface Asset in order to generate a random X and Y coordinates, then uses them as a binding in your animation.
You may also want to check Conditional Triggers for generating “smart” X/Y values. If you want to be sure to create some movement, if an object is the second right half of the screen, generate coordinates that will be in the first left half.
Alex, thanks for the responses. I guess I was hoping for a more elegant way to animate objects like a rudimentary animation module that uses keyframes.