How do I move files to box? There are two main ways to move files to Box. One is using Box Sync and the other uses the web client. Step 1. Open BOX Sync folder Step 2. Drag file/folder into BOX Sync folder. Step 1. Open BOX Sync folder Uploading files using Box Sync-Find the BOX Sync folder located on your desktop. Double click to open the folder. Step 2. Drag file/folder into BOX Sync folder. To upload a file or folder to box, simply drag them into the box sync folder.