@SushrutParanjape-9466, Welcome to Microsoft Q&A!
Thanks for posting a good question.
For WebJobs with CRON expression, no changes are required. Further on how it works, For the schedule to work it requires the website to be configured as Always On and is not an Azure Scheduler but an internal implementation of a scheduler.
Kindly checkout this document 'Scheduling a triggered WebJob' section for configuration details.