Sorry, there's no IN and OUT effect. There's only ONE effect per transition between TWO screens. This will either have to be set as a effect FROM the current screen or an effect TO the next screen. But there's already an option to set it.
There's no Timing setting yet, but there's a constant that coud be changed into something else, but I don't know if the fade effect can be timed -- the time it takes depends a lot of the screen size being faded.