Hi Martina,
The easiest way to create non-crimp fabrics is to use the predefined option "LamiGeo (Create Laminates)" in FiberGeo (find it under FiberGeo --> Predefined, or alternatively under GeoApp --> Module Predefined --> FiberGeo. With LamiGeo, laminates can be created with a simple graphical user interface.
If you want to create more complicated non-crimp fabrics (or generally layered structures), first create the layers (e.g. with FiberGeo) and attach them with LayerGeo --> Attach.
Cheers,Sebastian