To follow this guide you will need:
"Database and services configuration" permission to configure storage
"Site administration" permission to access the "Admin"  panel

Click the dropdown ▼ next to "Add Local"

Click and enter your Amazon S3 "Bucket name" 

Bucket name
 ?
Access key id
 ?
Secret access key
 ?
Show keys
Region
US East (N. Virginia)
US East (Ohio)
US West (Northern California)
US West (Oregon)
Asia Pacific (Mumbai)
Asia Pacific (Osaka-Local)
Asia Pacific (Seoul)
Asia Pacific (Singapore)
Asia Pacific (Sydney)
Asia Pacific (Tokyo)
Canada (Central)
China (Beijing)
China (Ningxia)
EU (Frankfurt)
EU (Ireland)
EU (London)
EU (Paris)
EU (Stockholm)
South America (São Paulo)
 ?
Enable reduced redundancy storage (RRS) ?
Read only ?
Files managed by
StorageService
Third parties add files, StorageService only reads ?

File management can be set to: 

"Read Only" where there are assets stored on this location but nothing new should be stored to it
"Files managed by" Imagen "Storage service"	for full management by Imagen
"Third parties add files, StorageService only reads" where Imagen recovery metadata will not be stored with third party files

Third parties add files, StorageService only reads ?

File management can be set to the Imagen"Storage service", or "... storage service only reads"

Alert! When set to: "Third parties add files, StorageService only reads": 
recovery data will not be stored with third party files, so recovery of media will not be possible if the storage database is lost or corrupted.