When any view is open in the designer the “gear tab” is the only way to access the Page Configuration screen. This did not feel super intuitive, and I actually wrote a whole post thinking there was no way to find it without all views being closed. On my last “idiot-check” before posting I found it.
From a navigation standpoint, it would be quite helpful to have the Page Configuration window appear when the “Perspective” item and/or “Views” folder are selected in the Project Browser.
build: b2018110602 / b2018110610