[Submission Stage] Notifying Authors upon Editor Assignment

Describe the problem you would like to solve
Our editorial team would appreciate having an option to automatically notify authors when an editor has been assigned to their submission.

Describe the solution you’d like
An automated email is sent to the author as soon as an editor has been assigned to the submission, informing them that their submission is being processed.

Who is asking for this feature?
Journal editors.

Additional information
No additional information