Access your Mission Center and click on Managers.
Access the manager profile to be modified. Super admins see more managers.
A simple manager account will see accounts created or his own account.
1. Nickname change
In the General information section, click on Edit
Modify the nickname and click on Change name
2. Avatar change
Drag the mouse on the image and you will see
- an image icon to access to the new window allowing you to browse your files
- a pencil icon to edit the current image in order to zoom / unzoom