If you are using Advanced Roadmaps on Jira Software Premium or Enterprise - you can get additional benefits from using Easy Issue Templates for Jira.
Once you set “Advanced Roadmaps hierarchy levels” and create Hierarchy Level 2 (e.g. Initiative) structure - you can save the whole Initiative structure with child Epics, tasks, and subtasks.
Please note that we currently don’t support N issues levels, e.g. level +3 of the Advanced roadmaps issue hierarchy that goes beyond Initiative. Though, It’s in our roadmap. If you need that hierarchy support - let us know 📧 !