For defining the longitudinal reinforcement you have theese two options available in PRE-Stress:
1. Define reinforcement using strand pattern.
Use the Strand Pattern Manager to load either a normal pattern-file or a master pattern file with all possible strand positions for a casting bed in a specific factory. The center of gravity for the cross section and the center of prestressing are shown to minimize any non-symmetrical deflection.
2. Define reinforcement using layer of reinforcement.
For defining the transversal shear reinforcement you have the option to go with automatic design or with manual design.