Create custom page layout

1. Create custom site columns for the custom page layout under new custom group

2. Create a site content type for page layout under new content group

3. Add the custom site columns created to the newly created site content type.

4. Launch SharePoint Designer and open the site

5. The custom page layout must reside in master page gallery

6. Create File --> new --> SharePoint Content --> SharePoint Publishing --> Page Layout

7. Select and create the Content groups and type

8. After adding the page, go to design view, and add the fields available under the Toolbox "SharePoint Controls" --> Content Fields

9. Save

10. Now the new custom page layout is available in the site page layouts (Site Actions --> Create Page)