The folder page may include an option for uploading files from your computer to the current folder.
Click Upload from the top menu.
OR
Right-click the folder and select Upload option.
Click Open.
The files you selected will be uploaded to the folder you choose.
The files that you choose to be uploaded may be scanned for malicious behavior. If they are being scanned, the Upload box displays additional information about the uploading and scanning status of the files:


If this message is displayed, you should check your system for malicious or infected files.
OR
To upload the files, drag and drop the files from your computer into the current folder.