Can the Splunk App for AWS be configured at the Organization level that attaches each account or only an option at each account level if have several AWS accounts?

[scotthoek]

We have our AWS configured using the Organization option and attached each of our AWS account there. Can we save time and configuration by setting the Splunk IAM role there or will the Splunk App for AWS only support the option at each account level? We are trying to minimize configuration time, if possible.