Use the Sine behavior for it, or a simple math, any arc start with a second (or more. The more, the smooth it is) degree equation, it's a simple math doing the movement with X=1*X and Y=2*X for example, and enable the |destroy outside layout|, disable any other behavior the object have.
How do I do "a simple math"?
Using the sine behavior didn't work. It just moves the sprite horizontally.
I'm pretty new to this and I can't find many tutorials maybe because I don't know where to look for them. Googling doesn't seem to help.