Supporting developing successor - handover @ ウィキ

Hiro, who has been in charge of the financial system for many years, has decided to transfer overseas, and Kei became his successor.
After the handover, Kei arrived at the post. Immediately after she arrived, she had the busy season. However, Kei was not accustomed to her new job, making it difficult to do business alone.

What should we do to prevent trouble from occurring immediately after the transfer?

Kei has been in charge of only a small system until now, and she is not familiar with the system in charge this time.
Joe and Yoshiaki have some knowledge of the financial system.
There is a horizontally divided atmosphere, and work can be carried out as appropriate by non-person in charge as appropriate.
Yoshiaki and Joe will also enter the busy season and will not have the time to follow Kei, but for the moment they have enough resources to help Kei's business.

Follow up on behalf of developing successors.

Until Kei got used to work, Joe and Yoshiaki decided to follow her.
Thanks to Yoshiaki and Joe, Kei was able to get through the busy season immediately after the change, and Kei was able to get used to the job little by little.

Spread of knowledge is a necessary condition in executing this pattern. Also, this pattern makes it easier for successors to ask third parties about the work content, making it easier for Witness for the knowledge.