HR Leaders / Department Heads:
Department Heads are executives but can also be managers of new hires at the same time. As managers of their own direct teams, they can view comments submitted by their new hires, buddies, co-workers and other teammates as well as the comments that they've supplied.
Department Heads are also managers of managers and as such, cannot view comments left by team members under those managers. As above, they can only view comments left in relation to scores provided in support of their direct new hires.
Department Heads also cannot view comments left in relation to new hires that are not within their department or oversight. For example, the Southeast Regional Director will not see scores and comments left in support of hires in the Northwest Region.