Ipad Pro how do I move the adjustments sliders to centre

While editing I accidently moved the adjustment sliders to the centre of the screen in landscape orentation. I had Exposure, temp and even the ability to start amages. This new view enabled me to work really quickly, however I have since lost the interface and now all the adjustments are back on the right hand side. 

Does anyone know how I was able to move the adjustments from their usual location, the right hand side to the centre of the screen again mimicing the sliders you get on mobile? 

Many thanks.