handover
noun [ C or U ]
MANAGEMENT uk/ˈhændəʊvər/ us/-doʊvɚ/the act of giving responsibility for something to another person, or the period during which this happens:
Company executives expect the handover to be relatively swift, with Norris taking over the chairman's role within weeks.
handover of sth The handover of power is not going to happen before a general election.
an orderly/smooth handover
Now, after a handover period, he is leaving the board completely.