You, or, someone in your business needs to have sufficient training or knowledge of hygiene matters and the activities in the business in order to write up a suitable food safety management system or adapt one that has been produced as a model template.
The type of system you need will depend on the size and type of business. Large businesses and manufacturers will need very detailed written systems and highly trained people to write them, but small caterers will only need a simple system.
Dynamic safety experts will help you to fulfill the requirements for any organization in the food chain and its corrigendum ISO 22000:2018 gives the basic requirements for a food safety management system to ensure food safety along the food chain, up to the point of final consumption.