When you elect to "watch" an asset, Lifecycle sends alert notifications when updates are made. This allows you to keep track of changes as they occur in real time.
Go to Product Planning > Backlog Goal (or Objective).
From the grid, open the Summary by Project drop-down menu at the right of the grid for the objective you want to watch.
Select Watch Backlog Goal (or Objective) from the list. To turn off notifications for the goal, select Stop Watching from the drop-down list.
See Watching Assets for more details.