Hello,
Actually, there is one "Master page" tab for the root of the content tree. However, if you want to have different page layouts, you can use the ability of the Portal GUI to control inheritance of page templates and content. Detailed info can be found in our tutorial at:
-
Visual inheritance-
Content tree and page templatesUsing these tutorials, you can create following site structure (for example):
root
-> sectionA
-> -> subsectionA
-> sectionB
-> -> subsectionB
According to the tutorial, set 'Do not inherit any content' on the 'Properties ->Template tab' for each SectionA and B page (You can choose the way how to control visual inheritance according to your needs, e.g. no inheritance or inheriting from simple or blank root master page...). SectionA page will have layout different from sectionB page. Both pages will contain page placeholder. All subsections will be inheriting content from appropriate parent pages.
This way you can achieve 2 (or more) Master pages layout.
Best regards,
Michal Legen