If we look at the display of the Role Center page generated by this layout again, we will see a chart (Trailing Sales Orders), followed by two ListParts (My Items and Report InBox) and, in turn, followed by the System Part (My Notifications). The two Page Parts, My Job Queue and Connect Online, do not appear. Those two Page Parts are defined by the developer with the Visible property equal to FALSE, which causes them not to display unless the Role Center Page is customized by the user (or an administrator or a developer) and the part added to the visible part list: