If you still need to chain your geometry into a curve, click the Curve chaining button and chain the curve. See Overview of Chaining for more information.
Select the curves(s) in the Graphics window. See Selecting Graphical Objects for selection hints. Any curves that were selected prior to entering the wizard are listed.
Hit the "+" key to add the curves to the selected list. The curves change to the highlight color (green by default).
To remove a curve from the list, select the curve in the Graphics window or click on the name in the list and hit the "X" key. To select a range of names from the list, click on the top name and then hold the SHIFT key down and click on the bottom name.
If you prefer to select the curves one at a time, click the Pick curve 
button. The dialog box warps into a small button. Click the geometry or curve in the graphics window. Repeat this procedure for each curve.
When you have selected the curves required to define the feature click Next.