While Cadence has moved to 17.2, 17.4, and 22.1, remains the baseline for millions of legacy designs. Many defense and medical device companies still require 16.6 because newer versions break their proprietary scripts.
To create a new project, follow these steps: orcad 16.6 tutorial
Before jumping into the board design, you must "prepare" your schematic data. Annotation Tools > Annotate While Cadence has moved to 17
Use the Place > Part menu (shortcut: P ) to browse libraries for components like ICs, MOSFETs, and discrete parts. While Cadence has moved to 17.2