Currently the Rovo Agent Work Item Planner will currently break down an epic into useful sub-tasks or breaks down a page into tasks. However it currently does not help in creating the stories or issues in Jira. 

It would be ideal if this Rovo Agent can match the parity of Atlassian Intelligence and create child work items. https://support.atlassian.com/jira-work-management/docs/create-issues-and-subtasks/#Create-child-work-items-suggested-by-AI.