How to download many files from a project to a volume?

Greetings. I was wondering if you could help me. I have a number of files in a project that I am on that I would like to copy to an Amazon S3 bucket. I have mounted the bucket on a volume. However, it is not clear how to copy the files to the bucket. While https://docs.cancergenomicscloud.org/docs/aws-cloud-storage-tutorial#move-file-from-project shows how to move a particular file, I would like to move many files. Is this something that can be done via the Cancer Genomics Cloud GUI/web interface, or is there is some link showing me how it can be done? Many thanks!