When accessing member management tools from the website (click your profile avatar and select "Administration"), you will see that for any member, you can assign different roles. Roles are important because in any of the categories you create, you may restrict both posting and display to users who occupy certain roles. For example, you could assign "Team Member" to specific members of your staff. Then, you could create a category like "New Marketing Initiatives" and restrict both viewing and posting only to Team Members.
In the example below, "App Dev" is limited to Administrators for both posting and display.
Here are the permissions/access features for each role:
Administrator: Reserved for the highest level access to all admin tools plus the dedicated admin console.
Article Author: A user with this designation may post articles in the Articles area.
Brand: A user with this designation may establish one or more brand pages to promote their products.
Community Admin: This role, when assigned to a user, makes EVERY OTHER MEMBER follow that user (unless a member goes back and unfollows). This is a powerful designation and permits your organization to create a user account that represents the site, itself. When a Community Admin posts EVERYONE who is following the admin gets a notification. All new users will automatically follow the Community Admin. If a user is stripped of Community Admin status, all automatically assigned follows will be removed, but anyone who manually followed the Community Admin will remain a follower.
Master Class Admin. This role allows the user to create and maintain master courses. Importantly, one admin can maintain courses for many authors. The Master Course tool permits the admin to assign an author who will get credit for, but will not be able to administer, the course.
Moderator. This role gives the user access to the moderation tools.
Promotion Team. Any user who purchases credits (or you award free credits to) will get this role and it will permit them to create "Sponsored" posts.
Standard. Every active user should have this designation automatically.
Team Member. This role works simply as a way to create post categories and restrict viewing and promoting to applicable team members.