With this software, I don't believe so. You could lock down each user to a separate directory, but I think that's the most control this software is going to offer you. If you're sharing some files with someone you don't trust, you can give them their own directory so they don't have free reign over all your other SFTP directories and files.
On Linux this would be much easier, because you can install SSH server and just lock each user to their home directory, and assign permissions as root. With Windows, you'll need a different program, and the majority of ones I came across in my research aren't free.