Is there a way to disable interpolation on an animation?

Here is my problem. I want to make a set of character animations at a low framerate to give them a cartoony feel. The issue is that roblox seems to automatically interpolate keyframes. Is there a way to disable this?

I believe there is an animation tween option called Constant that keeps the parts from interpolating. You can set keyframe tweens by selecting then right-clicking the keyframe objects you want to select. The rest is self-explanitory.