Graph Editor - Moving only one side of a tangent for multiple keyframes This is a question from a Maya user.
I can't find this in the manuals, and I feel really dumb. They all take it for granted.

I have a lot of animated properties in the graph editor. They all do the same. I'm moving them around together. But I want to change them to Free Tangents, which I did, and change their animation by moving the handles on both sides of the point.

But I can't do it. I changed to Maya preset in the settings, so I could do it the same way I do it there. But there is NO WAY to move the tangents by selecting and moving them using the handles... 

EDIT:
Moving one tangent is possible by using Middle Mouse Button, BUT this doesn't work at all for several tangents. I want to move all of them at the same time.

How do you do it?
To scale only one side of a group with free tangents:


Select the set of keys
Press C and hold Shift to deselect the tangents you do not want to scale
Right click to confirm the operation
Press S then X to scale along the horizontal axis as required