To create data security and to ensure that the data is only accessed by authorized personnel, many websites have multi-level users which can also be termed access control. Based on the defined roles and responsibilities of the person, they are given login credentials that would let them see the data that is relevant to their work.
Usually, access control is defined by the organizational hierarchy of a website. This means that the lower and mid-level employees will only have less access to data compared to the decision makers. Access can also be controlled in terms of changes that can be made to the data. This means that some employees will have view-only data authority while others might have editor and commentator authorities.