When you invite a new user, you can choose between two different access tiers:
Admin - Can view and manage all of the settings for the company, this includes:
Setting up the Org Chart
Managing Connections
Setting Departments
Team Member - Only has access to their direct reports information - this is usually the role for people managers and individual contributors.
If you ever need to change a user's permissions, you can do so in Settings, under the "Employees" tab.