A ply is a layer of material that you apply to a surface to build your object.
The ply will be created in this layup. If no sequence exists, one will be created for you containing the new ply.
The Ply dialox box opens.
Generally this projection is from a curve on to the workpiece surface of the layup in which you are creating the ply. You can select multiple projections, but they must all be onto the same surface.
The material library contains materials that can be used for exploring different strategies for the ply. The packaging values associated with the material you pick will be the only packaging values allowed in the strategies you create for the ply.
This is the angle of the ply with respect to the direction of the layup that the ply is a part of.
Alternatively, you can enable surface offset for the ply in its strategy. This requires less disk space, but could impact performance if you create many such offsets.