How do I use Split View in OS X 10.11 El Capitan?

I downloaded the Developer Preview of OS X El Capitan and I'm trying to use the new side-by-side split view feature. However, I can't seem to figure out the right incantation to use it.

How do I put two apps side-by-side in a full screen split view on El Capitan?

Solution 1:

It appears that I was doing it wrong. I don't see a way to enable split-screen from just two fullscreen windows in mission control. Nor do I see a way to enable it from two regular windows. But if you have one fullscreen window and one regular window, you can drag the regular window onto the fullscreen in mission control, and it will create a split-screen view.

I tried this successfully with Safari, Finder, and Chrome.

Solution 2:

For the split-screen feature to be available "Displays have seperate Spaces" needs to be enabled in the System Preferences of Mission Control:

Please also note a log out is required if this setting is toggled.

Solution 3:

It's no longer Developer Preview. the solution I just found is:

Press and hold the green fullscreen button, drag the current window to the left/right side of screen, and select the second window for the other half of the screen.