When setting up your server's SSH connection information you'll be asked for the"connect as" user and for the "operations directory".
Remember that the user you specify must have permissions on the given directory.
For example say you had a user "forge" and wanted to use the operations directory of "/ottomatik". You'd want to set the permissions on that folder by changing ownership like so:
sudo chown -R forge:forge /ottomatik
Alternativley you could specify an operations directory somewhere that the user already has ownership, such as in their home directory. Perhaps something like /home/forge/ottomatik_ops in our example.