FTPing content to XojoCloud

Can I place other content on my Xojo cloud? There are some auxiliary pages, scripts and media and the ideal place is a subdirectory on this cloud, along with one app.
Also for other projects will need separate apps, but I assume they are allowed via the IDE.

Yes. You can go to your Xojo Cloud control panel and enable SFTP. Then, I would use an FTP client to create a new folder (with the name of your app) in the Shared Documents folder and put all of this content in that new folder.