To manage an account on Windows 8/RT for the phorego app, there are three options: 1. Register your account if your phone number has never been registered before by entering your information and a validation code. 2. Login to an existing account by entering your registered information and a validation code. 3. Claim your phone number if it was previously registered by others or if you want to start fresh, which requires entering information, a validation code, and then re-registering your phone number.