How do I add a user to a locker?

To add a user to a locker that is already created, login and click the Settings tab.
You can then click View Lockers.  From here, find the locker you want.  Click the locker name and the edit locker screen will show.  At the bottom you will see Add Users.  First, change the school assignment to the correct school. The available users will populate on the left. You can then add users to the locker. Click Update Locker and you will receive a confirmation that the locker was successfully updated.