Maker-checker should live inside the workflow.
Approval controls are strongest when they are part of the operating path, not added after the work is complete.
Maker-checker is easy to describe and surprisingly easy to weaken. If preparation occurs in one system and approval happens over email or chat, the firm may have two people involved but still lack a clean controlled record of what was reviewed.
Control needs a defined object
The checker should be reviewing the same controlled item that the maker prepared: the same period, data, assumptions, validation results and evidence. If the underlying item changes after review, that change should be visible and, where appropriate, require renewed approval.
Queues create accountability
A dedicated approval queue makes responsibility explicit. The maker knows what is waiting. The checker knows what requires attention. Management can see where work is blocked without reconstructing status manually.
Governance becomes part of the product
Geralyn RegOS is being designed so maker-checker, permissions, status and audit history are part of the operating model rather than separate administrative concepts.
Governance is strongest when the system knows what was prepared, what was reviewed and what changed.