EmmaHL:
You are probably at the top level of Publisher. If there are Publisher Sets in Publisher, double-click one of them to open the set, then drag the Layouts into that set. If there are no sets, then create one (
New Publisher Set... button near bottom of palette). If that is not the case, post a screen shot of what you are seeing.
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David