Always happy to help! And so sorry, I didn’t see your question about the Distance Field Ambient Occlusion. You’ll need to enable ‘Generate Distance Field Meshes’ in the project settings, then restart the editor. Then change the mobility of your Skylight actor to ‘Movable’.
Instructions and more information about it can be found here: https://docs.unrealengine.com/latest/INT/Engine/Rendering/LightingAndShadows/DistanceFieldAmbientOcclusion/#setup