Click Data Automation in your left-hand navigation menu:
Click Exports in the resulting "Data Automation" sub-menu:
Click the name of the Export you would like to view the settings for:
If you have not, ensure that your Export is deactivated by, otherwise, you will not be able to change the settings:
Click the Deactivate button in the top-right of your settings: 
Click Deactivate again in the bottom-right of the resulting pop-up menu:
Click the pencil icon in the top-left of your Export Settings screen, next to your Export name:
Input your desired name in the resulting pop-up menu under Name:
Click Save in the bottom-right of the pop-up menu:
You can not have duplicate Export names