Every team member should understand who to report to, how often to report, and what to report.
When a team member is unsure of his or her exact role, or is unclear on who their direct manager is, it creates inefficiencies in the operation. It also makes the team member less effective. When the reporting structure is unclear, it's unfair to the team member as this can and will lead to frustrations. Making it clear to the team member what is expected of them, including who to report to, how often to report, and what exactly to report enables the team member to be effective. When team members are effective, the operation becomes efficient and as a result the organization accomplishes its objectives and key results.