How to create an arrow down bounce loop

What is the best way to create a bouncing arrow down loop in articulate storyline? So when you have an arrow pointing down and after a while it bounces up and down to attract attention to move on.

Is it working with layers? Or a motion path? With motion path I saw you can do it in 1 direction but not 2. 

Hopefully somebody can share the best way :) Thanks

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