Chapter 7 - Stacked objects - Author, Contact, Bio Pages for example

In the chapter on Reality Composer Actions and Behaviors there are instructions to select the four pages to hide them, and then we need to select them individually for the custom behaviors. Because they are stacked on top of each other, is there an easy way to select them individually? Is there a layers list or something? I had to change their positioning to complete the tutorial and then put them all back.