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The cursor changes to a hand symbol.
Move the reference point to its new location, in this case the quadrant point of the ellipse.
Now any moving, scaling, or rotating will be done relative to this new point.
To return the rotation bar to its default position, select Default Reference Point from the local menu, or click the icon on the Inspector Bar.
Changing the Rotation Bar
For both ends of the rotation bar, you can select the points by pressing Ctrl and clicking. (The yellow point is the reference point and has additional ways to be selected.)
The cursor changes to a hand symbol. In this example, the reference point is moved first.
The green rotation handle is selected and moved the same way.
When you move the rotation bar, whether the selection rectangle changes depends on the Link Selector Shell option in the Selector 2D page of the Selector properties. See 2D - 3D Selector.
To return the rotation bar to its default position, select Default Rotation Bars from the local menu, or click the icon on the Inspector Bar.
Now any rotating will be done relative to the new rotation handle and reference point.
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