During the installation process, you must specify a package group into which to install a product. A package group represents a directory in which packages share resources with other packages in the same group.
When you install a product using IBM Installation Manager, you can create a new package group or install it 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.)
A package group is assigned a name automatically; however, you choose the installation directory for the package group.
After you create the package group by successfully installing a product package, you cannot change the installation directory. The installation directory contains files and resources shared by the products installed into that package group. Resources in the product package that can potentially be used by other package groups are placed in the shared resources directory.
Note that when you install multiple packages at the same time, all the packages are installed into the same package group.