A: Yes! You can do this by creating a list. A list is simply a list of certain flyers and/or teasers in your account that you want to include in a Widget, sort of like a music playlist on your iPod. To learn how create a list, click here.
To use a list in a Multi-item Widget, in the Widget Editor, click the drop-down menu in the Choose List section of the Widget Editor, then select the list you want to use and continue creating the widget following the steps outlined here.