The criteria are used as labels that will enable you to segment your contact base. This classification is done manually.
The criteria are usually set at the beginning of the project, before the recovery of the contact data. If you need to create new criteria later, you could do it requesting a service here.
A criterion can be:
Visible or invisible on the Internet: If it's not visible on the internet, the criterion will still be visible for operators in the back office, who would fill out the information. However, if its set as visible, when a person would open an account on your internet ticket shop, you'll be able to display a series of questions that that person can fill out, such as: main interests, whether they want or not to receive a newsletter, leaflets, etc.
Applicable both to structures and individuals or applicable only to individuals or structures: The criteria are applied by default to both types of contacts because it is more practical and flexible. However, it is also possible to create a criterion that applies only to one of them.
https://confluence.secutix.com/display/RN/Contact+criteria?searchId=4D706F1ZQ
https://confluence.secutix.com/pages/viewpage.action?pageId=14483685