See the What is a Printed Circuit Board? page for more information about PCBs and the general design flow for creating a PCB.
Cadence PCB Editor is an electronic CAD (ECAD) program that takes a netlist created by Cadence Schematic Capture and provides you a software environment to design a PCB. A netlist is a file that describes interconnections among components in a circuit. Read the short Cadence (Allegro) PCB Designer Datasheet for an overview of the software and its features.
In Windows, launch “PCB Editor”.
This program is also called “Allegro PCB Designer (was Performance L)” and “Allegro PCB Design L (legacy)”. These programs are all equivalent.
See the Transferring a Cadence Schematic to PCB Editor page.
Globally changing trace widths: <altering-trace-widths.html>
Globally changing vias: TBD