Trying to animate an object, first with "appear" then with "disappear"

I have an object on a slide.  I want it to appear with a click.  Later, on a click, i want the same object to disappear. I select the object and set its animation to "appear" and that works fine.  But, if i select it again because i want it, on a later click to "disappear", it changes the "appear" -> "Disappear".  So, it thinks i want to update from "appear" to "Disappear", and not to have a second animation for the same object.

Is there a way i can have a second animation on the same object, instead of updating the first, already defined animation on that object?

Please tell me how if you know!  I would guess i need a very detailed sequence of clicks to follow.

Thanks, Tom