The Open Group “Stakeholder” ⇒ “The individuals and groups within the organization who will contribute to the development of the architecture, those that will gain and those that will lose from its introduction…”
(Follow a pattern of [Tag Alias] adjectival-prefixed Noun of a Business Service that describes a Stakeholder's Business Role, not a Title or a Fullname.)
The ArchiMate notation here expresses the idea that Actors (people) are assigned Business Services (job descriptions or responsibilities) that realize one or more Business Roles.
Source: here