If you'd like to create a scheduling Manager, you can do so by selecting Employees in the top navigation and then View next to the users name:
In their profile, select Employees assigned from the left navigation. Note: If you don't see this option then you need to upgrade the user to a Manager. In their profile select Edit and then check the box next to Manager.
Once at the Employees assigned section, select Edit Assignment:
Here you will be able to decide what permissions to grant the Manager. If you only want them to view scheduling information for employees select the View permission. Select Edit and Publish if you'd like them to have full control over the employees schedule.