We have several backlogs, which are each independently groomed by the relevant backlog Product Owner.
Our engineering team pick off items from all these backlogs, so how do they decide whether to pick off from the top of Backlog A, or Backlog B?
How can we run a second-level grooming session which presents issues from ALL backlogs into a single view, where we can then drag and rank them relative to each other so that Engineering have clear direction on the next overall priority across ALL backlogs?