It's a good question which I haven't seen asked about here, most thermostats on kitchen type combination fridge freezers do not allow the fidge section to go warm enough for cheese cave temps and thus most people buy an external thermostat to partially override the internal one.
But it's only partially, so you could still use the internal thermostat to adjust the ratio of cooling between the fridge and freezer, let us know if you try!
PS: Our 6 year old kitchen side-by-side fridge has two thermostat dials, so that style could be more adjustable than more normal, single thermostat and louvered air flow from freezer to fridge.