While GnaCAD is designed with an intuitive mobile layout, CAD software is inherently complex. A dedicated manual helps you bypass the learning curve by providing:
Chapter 4, Section 4.1 (Sheet Library). Solution: The PDF walks you through defining sheet dimensions, thickness, material name, and grain direction. It also explains how to add "offcut" (remnant) sheets to reuse later. gnacad manual pdf
What are you running GNAcad on (Android, iOS, or Windows)? What specific version of GNAcad do you have installed? While GnaCAD is designed with an intuitive mobile
How to switch visualization modes to inspect 3D models from different viewpoints and angles. Editing and Drawing Tools gnacad manual pdf