If you chose to select individual packages, you can now make your selections.
On the left side of the screen you will see a directory listing of package groups. When you expand this list and pick one directory, the list of packages available for installation will appear in the panel on the right.
To select an individual package, double-click on it, or click on it once to highlight it and click on Select Package For Installation. A check mark will appear on any of the packages you have selected.
To read information about a package before installing it, highlight it and the package information will appear at the bottom of the screen, along with the name and size of the package.