Use of the File Sharing option (i.e. creating projects to share files) is enabled by default for all users.
- If you want to withdraw this option for a user (or a group), select the user (or the group) under Administration→ Users (or Group Templates).
- Then select Settings→ Edit→ Trusted Devices (or Untrusted Devices) and remove the check from the Projects checkbox (also see the section Configure access permissions (Settings)).
- If you only want to prevent external recipients being invited to the projects, then just remove the check from the External projects checkbox.