This is accomplished all through the use of electronic Kanban cards and Kanban tables, which are accessible to all of your team members and any members of management who need to know where you are on your production cycle.
When each triggering indicator is hit, the system shows it on the Kanban tables and you will know that you have to start the next part of the process, whether that is further production, ordering of new materials, or the moving of inventory from one storehouse to another.