Moving Pivot Point

Sometimes you want to rotate an object around a specific point or scale based on a different point.

1.Select an object in your sence view and choose theMove Tool (w key).

2. Hold the "d "key and drag the object's origin to a new location. You can also press theHome key (PC-Insert key), move the point, then press the Home (PC-Insert) key to cancel.

3.To test your new pivot point

4. You  can also enter your value press Enter + Esc in the object's Channel Box..

Center Pivot Menu Item
You can also reset the pivot point to the object center by choosing Modify > Center Pivot.