The Deferral Code field should be available to add the Job G/L Journal line. Also the Deferral Schedule option should be available under Actions > Functions,
These are available in General Journal lines.
Needs Votes
Ideas Administrator

Thank you for this suggestion! Currently this is not on our roadmap. We are tracking this idea and if it gathers more votes and comments we will consider it in the future.

Best regards,
Business Central Team