I need to orchestrate an automation that duplicates specific attributes from an epic story to its child tickets, covering various ticket types, and vice versa. So, if there are any alterations to a child ticket, the epic story will be updated accordingly. What's the optimum strategy to establish this? For instance, the Epic ticket has a 'frontend requirements' attribute and I aim to transpose that attribute's value to a 'Frontend Story' child ticket that incorporates a 'summary' attribute. Also, if adjustments are made to the 'frontend story' child ticket, I want it to reflect on the epic ticket, specifically updating the 'frontend requirements' attribute.