olemus
Wiktionary, noun:
4. (law) a legal person that authorizes another (the agent) to act on their behalf; or on whose behalf an agent or gestor in a negotiorum gestio acts
When an attorney represents a client, the client is the principal who permits the attorney, the client′s agent, to act on the client′s behalf.
My principal sells metal shims.

ülevaateid
https://en.wikipedia.org/wiki/Principal_(commercial_law)