When you select an item from a list in Windows, you typically click the selection with your mouse to highlight it and then choose an option to process your selection, such as "OK." When you need to select more than one item from the list, you can use the Ctrl or Shift key when you click to select items. The key you use depends on how the selection list is organized and which entries you want to select.
When you hold down the "Ctrl" key and click items in a list, each item remains highlighted. You can select more than one item from any part of the list using Ctrl-Click, such as the first and last items. When you're done selecting items, release the "Ctrl" key and select the option to process your selections, such as "OK."
If you want to select more than one item and the items are listed consecutively in the selection box, use the Shift key to quickly select the entire group of entries. Click the first item in the section you want to select to highlight it. Scroll to the last item in the section, hold down the "Shift" key and click the item. Shift-Click selects the first item, last item and all items in between. Use the Ctrl key to select additional items outside of the consecutive group, then click the button to process the selections you highlighted.