People
Support users are typical users of the application. They require a login ID, application permissions, and Action Request System licenses, and they must belong to at least one support group.
Non-support users are all other people that work for your company who would require services from your support groups.
Permissions and functional roles determine what people information can be viewed or modified by different users. For example, if you have the Contact People Admin permissions, you can change a person's company or contact information, but not that person's support group association.
Permissions groups are used to grant users access to applications, modules, and sub-components in the BMC Helix ITSM. An individual can be assigned to one or multiple permission groups.