Can I configure separate S3 buckets in Refile initializer for different functionalities in a Rails 4 project?

I am using Refile gem to upload images on S3 in Rails 4 project. My requirement is to upload images for separate functionalities into two separate buckets on S3.

However, I could find documentation for setting up only one bucket. Is there anyway I can configure multiple S3 buckets with Refile?