I searched a split monitor feature like yours since ages, so i was pretty happy to ear you integrated that on display fusion.
Unfortunately, i need to be able to have a monitor split not on the middle but on 1/4 of the screen size.
A 4 time split couldn't do the trick, simply because it does not let a 3/4 screen on the other side.
So, a re-sizable split feature would really be wonderful
Hope i was clear enough, English isn't my first language.
At the moment it's only possible to do symmetrical splits. We're hoping to add the ability for asymmetrical splits in a future version though, so we'll be sure to post an update if/when we're able to.
We've just released a new DisplayFusion Beta version (http://www.displayfusion.com/Download/Beta/), and you can now do asymmetrical splits! In the Monitor Configuration window, just click the Splits and Padding button to get the new configuration options. You can start by using the Preset Splits button, and then tweak it from there.