The first step is to download the document from the ZDHC Roadmap to Zero website and read it! To have a better understanding, you can check out the ZDHC Academy and attend the CMS-TIG training workshops that will be rolled out from Q3 2021.
A Supplier having a ZDHC Gateway account can register on the Supplier to Zero platform to go through a self- evaluation questionnaire and receive recommendations from the platform on specific areas. The Implementation Hub website will shortly have an Accredited Experts page to provide on-site support for the CMS-TIG implementation wherever needed.