Verb – Initiate
1 formal : to cause the beginning of (something) : to start or begin (something)
initiate a new project
Doctors have initiated a series of tests to determine the cause of the problem.
The company initiated judicial proceedings against them.
2 : to formally accept (someone) as a member of a group or organization usually in a special ceremony
The new recruits will be initiated tomorrow night.
He was initiated into a secret society.
3 : to teach (someone) the basic facts or ideas about something — usually + into
They initiated her into the ways of the corporate world.
— initiator /ɪˈnɪʃiˌeɪtɚ/ noun, plural initiators (count)
the initiator of the project