Sub User
There are varying levels of permissions that can be granted for a Sub User within someone's account. Configurations include:

Write-only
This means users can only add files to an owner's account. They can also create new folders.

Read-only
A user is limited to downloading files only. They are not be able to upload, rename, or modify files.

Read/Write
This permission setting allows uploading and downloading of files from the owner's account.

 

Collaborators

Editor
This permission setting allows full access (i.e. the ability to upload, download, modify and delete) to the files in a collaboration folder.

Viewer
This setting allows read-only access (i.e. the ability to view and download files, but not upload, modify or delete) to the files in a collaboration folder.