Offsets a curve in the direction you pick by the amount you set. Note that offset is a mathematical function based on the curve. It is not necessarily a linear transformation. If you just want to move a curve, use the Transform function.
Name the curve in New Name field.
Set the offset distance value in the Offset field.
Set the Left or Right radio buttons as necessary to offset the curve in the correct direction.
Offsetting a curve, sometimes results in overlapping regions. In this case the curve intersects with itself, as shown below.
To remove such regions, check Eliminate self-intersections and the overlapping regions will be trimmed away as shown below.
Click OK to create the curve.