You can create a saved list using the shopping cart function in NationBuilder.

When you are navigating your supporter database or viewing a selection of people anywhere else in the control panel, you will notice that next to each person's name there is a small plus sign. When you click on the plus sign it turns green and that person is added to your shopping cart in the upper right hand corner of your screen. NationBuilder allows you to keep one unsaved list open in your shopping cart at any given time, that way as you work you can continue to add people to your new list when you see them or think of them.

When you are ready to save your list you can click on the shopping cart and you will be taken to a page where you can view your new list and save it. You can always add people to a saved list by selecting it in the drop down that will appear next to your shopping cart. When you do this you can click on any person's plus sign to add them to this list.