You will use a file transfer application running on your local machine that supports the scp (secure copy) protocol. As such, this is extremely dependent on your operating system. Here are some recommendations:

To create, edit or move files, click on the Files menu within OnDemand. A dropdown menu will appear, listing your home directory and any Project directories you have access to.

Choosing a directory opens the File Explorer in a new browser tab. The files in the selected directory are listed. No matter which directory you are in, your home directory is displayed in a panel on the left.

MobaXterm

WinSCP

FileZilla

Ref: https://www.bu.edu/tech/support/research/system-usage/getting-started/get-started-file-transfer/

Ref: https://www.bu.edu/tech/support/research/system-usage/scc-ondemand/managing-files/