As an administrator, you can give other users permission to upload CSV, Excel and selected document file types as a source, without requiring administration privileges. This permission does not grant access to use Designer, see any sources or items or to upload via sync. The file upload takes place outside of the Designer module.
On the user’s Profile tab, scroll down to the File Upload settings and select the Allow File Upload checkbox.
Users with permission to upload files will see the File upload link at the bottom of the database list (underneath the New Database link).