Does ScholarOne really force you to have multiple logins?

Thank you for your question. My name is Jasper Simons and I work for Thomson Reuters, the organization behind ScholarOne. Our platform is configured by our publishers as they service their authors and editors. Publishers seek to maximize the value they offer to their journals, their editors and their authors through specific configurations of the ScholarOne peer-review workflow. This doesn't address your concern, but I hope that it sheds some light on the reasoning behind the multiple login requirements for authors. In short, there is one ScholarOne platform but there are many site configurations.