Creating a storage
It is possible to create multiple storages and place several buckets in them to post files.
Creating multiple storages lets WL partners delimit storages between several clients.
Go to the “Portfolio of services” section of the S3 storage
Make sure to enter the name of an object storage in the field below.
Storage name must be unique. The value can only contain lowercase letters of the Latin alphabet, numbers,hyphens and period. The first and the last symbols have to be letters or numbers. Acceptable length is from 3 to 63 symbols.

After this, click "Create".
The storage is created, now it is possible to create buckets and assign a client for a WL partner.