We are a team of tech writers who are trying to figure out the best way to assign tasks on JIRA. Our product owners create Epics and user stories for their team and we need to track these tickets and create our own tasks without affecting their workflow. Is is best to create new user stories to link to their stories or is it best to create sub-tasks? Again, we do not want to affect their ability to close tickets before we finish with our work. But we do need to assign the tickets back to them for review and be able to close the ticket once we're done. Any feedback would be appeciated!