After having started working on a PCB layout, sooner or later you will likely find changes need to be made to your original schematic. Fortunately, you do not need to start the PCB design over as a result! Forward annotation allows you to essentially export changes made in your schematic into an existing layout, and here is how to do this in Cadence.
Some components have, in addition to their electrical pins, mechanical supports that must be accounted for in the PCB footprint. Otherwise, without mounting holes for these pins to go into, the component will not fit onto the board. This tutorial will demonstrate how to add the mounting holes to the footprint for a THB001P joystick.
This page lists tutorials for doing circuit simulations in Cadence.
This Cadence walkthrough goes through the process of creating a PSoC® 4 BLE module schematic symbol and PCB footprint.
Take note of all the files involved in the schematics you are merging, and ensure you have all of them. These include .dsn (design), .opj (project) and .olb (library) files, in addition to .psm (Package symbol, a.k.a. PCB footprint) files.
This tutorial goes through how to package Cadence schematic and PCB files for submission to Canvas.