A simple critical roles analysis can be started looking at distinct roles and why they are critical, consider any additional demographic challenges, e.g., age, and external scarcity of resource.
Gellir dechrau dadansoddiad syml o rolau critigol sy'n edrych ar rolau penodol a pham maent yn gritigol, gan ystyried unrhyw heriau demograffig ychwanegol, e.e.