There is a contract with four preconditions, of which the failure of any ONE is sufficient to void the contract.
Clearing the four preconditions requires the execution of ten documents, involving the actions/signatures of ten people. In theory, this could mean up to 100 executions, although it's more like 60-70, because while every person has to execute at least one document, not all ten persons have to execute all ten documents.
How do lawyers keep track of which documents have been executed, and which preconditions have been fulfilled? Do they use a grid or tallying system for this purpose? Are there "best practices" in record-keeping for many of the subject matters?