You have several options for managing your object storage:
Application integrated in the Data Center Designer, from which you can create your buckets, manage permissions and upload files up to 5GB.
Through the S3 API or a compatible application. In the Data Center Designer you can find the credentials and access URLs to be able to use your S3 storage via REST API or with S3 compatible applications.
In the following article we explain step by step how you can access your buckets.