This could be up clean and left right, could be titled I'm it off during certain scenes to resume the look option enabled.
This way, during hard pounding you could roll the eyes back, our if you have... Certain kinks, you could make the actor look away.
Some other sliders could be override chance, so sometimes they would continue their previous look settings, such as at the camera or locked.
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But then again. Doing it that way has an issue if you're trying to have multiple eye positions.