Induction ceremony

[Renato]

an occasion when someone is formally introduced into a new job or organization, especially through a special ceremony:

[Vania]

a period during which a new member of an organization or a new member of staff learns about the organization and has basic training:

[Oralee]

induction ceremony in British English (ɪnˈdʌkʃən ˈsɛrɪmənɪ) a ceremony held to mark a persons formal introduction or entry into an office, position, group, etc.

[Couch Potatoe]

(also induction ceremony) a ceremony in which someone is formally introduced into a place of work or an organization: The CEO will introduce her at her induction. an induction speech.