You can update your Account settings by clicking on the account name in the top right corner, where a drop-down menu will appear. In the general view, you can scroll down to Music control and choose to:
Under Account settings you can also manage subscriptions, billing, users, and presets for creating new zones.
By clicking the account name in the top right corner, you will also find your Personal settings. You can update your name, email address, and password. You can also set the day you consider to be the start of the week for your music schedule.