We are a large central team of 28 engineers working on multiple projects in small groups of 3-5 dedicated members for each project. Since we are a single team, we are supposed to manage these sub-teams under single project but separate sprints. We are able to create multiple boards & a sprint for each sub-team. But we are unable to link a sprint with certain board and it is leading to huge confusion. Is there a way that a given scrum team (sub-team) can see their own issues and backlog and not see other sub-teams backlog while all sub-teams being under a single project.