One point of contact for the whole group
A structure comes with many counterparties: banks, counsel, licence holders, the other arms of the group. When something needs answering, the question lands on you, wherever you are and whatever you are doing. This capability puts one person between the structure and you. You ask once. The answer comes back in one place.
One person who holds the picture
The point of contact is the same person who runs the reporting, the calendar, and the records. They answer because they hold the chart: who owns the companies, who signs on the accounts, who collects the royalties, who sits on the boards. When they do not know, they know which arm or which counsel to ask. The question is asked once and answered in one place.
The handover year
The year after a death is when control gets decided for the decades that follow. Banks, licence counterparties, and boards all need to know who they now deal with. A single point of contact gives them one answer, backed by records that were kept current all along. The office knows the structure because it ran it, and the handover happens on the paperwork instead of in a scramble.