Subitems linked to Task Timeline

I use the subitems as granular tasks that role into the larger task (or pulse). So, if one of my subitem timeline shifts, it impacts the end date of the pulse timeline. Is there a way to link the subitems timeline to the pulse timeline, such that if one of the subtasks timelines get delayed, it also updates the pulse timeline? Manually updating the pulse is unideal as I may forget to back and do so.