Hi Paul,
In the KeyGraph editor, first select which property you would like to modify. Then select both keypoints by dragging a rectangle over those two keypoints. They will light up in yellow. Next in the Interpolation you can select the type of spline you would like te use. But if you take the bezier, you will get the ease in/out by default.
If you use the TCB spline, you can adapt the animation by changing the Bias and Continuity etc. on each keyframe.
Hope this helps a little bit?
Kenneth
#XPression