How to set df property while creation of new record?

Hi everyone,
How to set df property while creating new record using scheduler? Actually I am creating a new record when workflow changes to “In-progress”, i will enter the details and submit that record after that from scheduler it will create new record on that time i need to make some fields to be readonly… any idea to set read only for creation of new record at second time?

Regards,
Nivedha