Well, I just figured it out (of course, right after I get done with my question!).
For those that have had a similar issue, you need to click the mouse icon on the Corrector panel (top left icon). That gets you into 'one-click selector mode.'
Then, select a line-break (or whatever) and you can then choose the page-break button.
I think that BD must be a different version than what is referenced in HarryT's tutorial, as this and some of the other buttons were in different places, just FYI.