I have few Xamarin apps and I want to bundle them all as a single pkg/installer and organize them into a folder under Applications similar to the following snapshot attached. Is there an option to specify additional Xamarin apps in the bundle settings of the project or any build script needs to be written? Can anybody point to some samples ?
Thanks,
Suma.
See Payload section to add folder and your .app files. 
They also support Certification for signing Developer Installer and Commandline. Just check the documentation.
Use Packages to create .pkgproj file that config your bundle apps
Go Xamarin Studio -> Project Options -> Custom Command -> Add new Common After Build: add script to copy all bundle apps to a folder that configured by above .pkgproj file
Run command line packagesbuild of Packages to build the .pkgproj file
Finish. Get your .pkg installer file in Build folder.
