Mercenary - handover @ ウィキ

Hiro has been in charge of financial system for many years, but decided to take overseas assignment with the next personel change. Yoshiaki decided to choose Hiro's successor from within the company. At that time, Yoshiaki searched for the right person based on the Successor as capable as the predecessor, but there was no suitable person who can be nominated as a successor.

How to choose a successor if there is no suitable person inside the company?

The financial system is an important system, it must respond appropriately to obstacles. We must avoid any system trouble caused by lack of ability of successor.
There is plenty of time for Yoshiaki to consult the Human Resources department about the successor. There are many related companies in Waseda Co., Ltd., and personnel exchanges are also active.

Look at external person when there is no suitable person inside the company

Yoshiaki consulted the Human Resource department to invite appropriate personnel from the. And he appointed Lise as Hiro's successor.
Lise is a veteran employee who has been an affiliate for many years and was experienced as much as Hiro. She succeeded in properly operating the financial system as Hiro's successor.

When Successor as capable as the predecessor cannot be used, this pattern is used. If this pattern is being executed, a brief explanation to the successor can be omitted, so there is no need to use Mentor for successor.

On the other hand, when it is inevitable that the successor's capacity is inadequate, it is necessary for the predecessor to Spread of knowledge and prepare an environment in which the Suipporting developing successor can carry out.
In some cases it is also important to follow by Extra-inning for completion of the unclear spot. Secure an emergency contact, Reunion for old members is also effective to compensate for the lack of ability of successors.