The CDM process involves several stages, including:

1. Pre-construction: This involves identifying potential hazards and risks, and appointing a principal designer and principal contractor to manage the project.
2. Construction: This involves carrying out the work in accordance with the health and safety plan, and ensuring that all workers are trained and competent to carry out their tasks safely.
3. Post-construction: This involves ensuring that the project has been completed safely, and that any relevant health and safety information is passed on to the client for future maintenance and repair work.

The CDM regulations also require the appointment of a CDM coordinator, who is responsible for coordinating health and safety matters throughout the project. The coordinator must be appointed on projects that involve more than one contractor.