The organizations and people dimension sets out the people aspects of service management to be considered when designing, operating and changing service offerings. People include employees, managers, executives, customers, supplier employees, or anybody else who is involved in the creation or consumption of services.
https://assyst.ifs.com/blog/what-are-the-four-dimensions-of-itil-4

https://www.bmc.com/blogs/itil-service-level-management/