Use 1 x A2 together with an OCF II Adapter and an OCF Softbox 3' Octa. Use the live view in your camera to help set your ambient to the desired look. Place the flash and softbox on the same side as the natural light is coming from. Put your remote in TTL mode and snap a shot, then flip the remote into manual mode and fine-tune the output. 
Pro tip: If you want the image to feel more natural, slow your shutter speed down to decrease the amount of contrast.
To learn more about Chris' lighting set ups and see more of his tips and tricks, visit here

Chris Fain's go-to gear for great light

Buy a Profoto A10 or a Profoto A2 and save up to 300 USD on Clic light shaping tools. 
Profoto A2

Pack light

Clic accessories

Soft light in a Clic

Profoto A10

The flash for life

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