You install packages into a package group. A package group represents a directory in which packages share resources with other packages in the same group. When you install packages with Installation Manager, you can choose to create a new package group or install the packages into an existing package group. (Some packages might not be able to share a package group, in which case the option to use an existing package group will be disabled.)
Note that when you install multiple packages at the same time, all the packages are installed into the same package group.
A package group is assigned a name automatically; however, you choose the installation directory for the package group.
Once you create the package group by successfully installing a package, you cannot change the installation directory. The installation directory contains files and resources specific to the packages installed into that package group. Resources in the package that can potentially be used by other package groups are placed in the shared resources directory.