If that task is set out in one or the other s job description, there could be little dispute about whose job it is. Another example might be a struggle between the DRE and the school principal about what first communion preparation program should be used by the children of the parish. A clear description of who is responsible for that decision could help avoid conflict. Or suppose the head communion minister took it upon herself to correct the way in which the teachers serve communion at a school Mass. If not, it would be easier to call her attention to the fact that she had crossed a boundary.
Good fences make for good neighbors and good boundaries can make for good ministry.
The next thing to be aware of is competency. Boundaries will not eliminate all turf wars because sometimes members of the team think a job outside their own area is not being done competently. Remember, though, the goal is not first of all to get things done right. And that is the key to understanding competency. Competency is not first of all about academic training.