To save the current list view whether a contact, company, group or opportunity list view, simply launch the add-on (icon on your toolbar or Tools>ACT! List View Manager) and click the Add... button. You'll be prompted to enter a name which will then appear in the list of views that are available to be loaded.

To load a view, select the view in the list that has been added to your toolbar. In the screenshot below, we show the Opportunity toolbar with the added dropdown list.
