Once a user account is created it can be used to transfer the files using the SFTP. The credential of user remain as defined for the UI. In addition, a user can add as many as public keys as needed for the password less authentication.
sftp -oIdentityFile=~/.ssh/id_rsa saqib@apps-35-238-185-249.trilloapps.com <<EOF
mkdir Home/today
put ./2020-03-05_00-02-06.png Home/today
put ./2020-03-05_15-28-13.png Home/today
EOF
https://drive.google.com/uc?export=view&id=1PuMw3Kib1eKejeEboOzmvReczWwWMaU_
Use expandrive (https://expandrive.com)