When SFTP users connect, you may want them to start in the /uploads folder.
This can be set on SFTP clients like FileZilla. Go to Advanced > Default remote directory, and enter in uploads
It's not be practical to ask every user to do this from their end. So it might be easier to just set this on the server side.
Targeting whole server for default directory
Edit sshd_config:
sudo nano /etc/ssh/sshd_configScroll toward the bottom, and change the following line:
ForceCommand internal-sftpTo:
ForceCommand internal-sftp -d /uploadsSave (ctrl-o) and quit (ctrl-x)
The -d flag sets the user's starting directory. It does not have any impact on their chroot directory, so they can still traverse up a level to get to their local folder.
Restart sshd to apply the changes:
service sshd restartThis change will apply to all SFTP users, since the modified line is inside Match group sftponly.
Connect using FileZilla, and you should already be inside the /uploads directory.

Targeting individual users for default directory
Edit sshd_config:
sudo nano /etc/ssh/sshd_configInstead of modifing the ForceCommand line in the Match group sftponly block, you will add another configuration block above the Match group sftponly block.
This block will read as follows:
Match user username1,username2ForceCommand internal-sftp -d /uploadsA single Match user block can be used to configure multiple users by adding a comma between each username. * Note: * that there is no space between the comma and the next username.
Save (ctrl-o) and quit (ctrl-x)
Then, restart the sshd to apply the changes:
sudo service sshd restart