In Sling, there are System Roles that indicate the level of access a person has to certain functions. These are different from the Positions that your company creates to indicate the jobs different people have within your organization.
The role that someone is assigned can be either Admin, Manager, or Employee. Those are the only 3 levels of access available in Sling. For more details about how these user roles determine access to settings and features, please check out this article that breaks down those roles.
The position that someone is assigned within their profile, on the other hand, is necessary in order for that employee to be able to receive information about shifts at their assigned location for that job.
This is important to note, because sometimes companies assign positions to employees to indicate their roles within a company. For example, you might create a position label for General Manager. This is not the same as assigning the system role of manager to someone.
To better illustrate the separation of these labels, below is a screenshot from an admin's perspective of an employee's profile. Notice that there is a place where the assigned system role is indicated, and then farther down the page, there are a number of positions that have also been assigned to the person.
When employees look at their own profiles, or their coworkers' profiles, they will not see the system role that has been assigned.