Hooks whthatre driven periodically by schedules are executed by the Schedule_Code hook. In addition, on account opening the execution
schedules job would be run, this would set the schedules which need to be executed at the frequency and timings directed by t he client when writing the Smart
Contract. Different products can have different schedules, and this is enabled through the use of the execution_schedules hook
Execution_schedule Hook The frequency/timings of the schedules are defined within the execution_schedules hook