In the network approach, you define the boundaries of future surfaces, assemble them into a network before generating a surface in each cell of the network. This section is about the first step: How to create the set of curves on the selected mesh, used as boundaries of the future surfaces.
We suggest that you create a Geometrical Set and make it the Define In Work Object where the curves are created. Then display the Mesh Shape Analysis to better understand the shape of the mesh. Use it as guide while creating curves.
Curves Network Preparation requires that you select a support mesh as you enter the command.