Let me start by saying that I love reading these kind of handbooks from various companies. One thing that stuck out to me was multiple mentions about "raising

Let me start by saying that I love reading these kind of handbooks from various companies. One thing that stuck out to me was multiple mentions about "raising the issue" for the tough topics (compensation issues, feeling uncertain) -- who is the issue "raised" to if there is zero hierarchy and I have no manager/adviser/councilor? Does the flat structure only apply to "individual contributors" and is there a more traditional HR/operations structure that is not shown?