To Shape a Surface using Reparameterization Curves
1. Open the Surface tab for the surface you want to parameterize.
2. Click 
Reparameterization. Reparameterization mode is activated.
Reparameterization. Reparameterization mode is activated.3. Add one or more reparameterization curves:
◦ Add one reparameterization curve
a. Move the pointer over the surface, a boundary curve, or an internal curve, to the approximate location where you want to add a reparameterization curve.
b. Right-click and choose Add U reparam curve or Add V reparam curve from the shortcut menu. A reparameterization curve is created.
c. Drag a reparameterization curve or one of its soft points along the boundary curve until the surface is parameterized as desired.
◦ Add multiple reparameterization curves
Do any of these actions:
▪ To add reparameterization curves in the U-direction that connect each piece in one boundary to the corresponding piece in the opposite boundary, right-click a surface and select Add piece to piece U reparam curve.
▪ To add reparameterization curves in the V-direction that connect each piece in one boundary to the corresponding piece in the opposite boundary, right-click a surface and select Add piece to piece V reparam curve.
▪ To create reparameterization curves that connect all the pieces of the selected boundary with the corresponding pieces in the opposite boundary, right-click a boundary and select Add piece to piece reparam curves.
4. Click Reparameterization to exit Reparameterization mode.
Reparameterization to exit Reparameterization mode.5. Click 
OK.
OK.