You have to scale it in the 3d program where you have made the rigg, mesh,… -> so in your case C4D. But in some hours I will be online and then I will try to explain it to you 
You have to scale it in the 3d program where you have made the rigg, mesh,… -> so in your case C4D. But in some hours I will be online and then I will try to explain it to you