Newbie compile question re adding a Preface

Hi,

Very new to Scrivener here. I have a short document I would like to compile. It has some front matter that is being compiled as a Chapter, throwing all the chapter numbering off. So my main quest is to find out how to spec the front matter as such.

I also see that in the Linux version there are no Compile options, as are shown in the tutorial video on site. Am I correct about that, and how does one deal with the Preface problem?

Thanks much!