Create Custom Actions for SharePoint 2010 lists using SharePoint designer 2010

In SharePoint 2010, it is easier to add custom actions that are scoped to a specific list using SharePoint Designer 2010. To start with adding Custom Action to a list, you have to create your own custom list from Custom List Template.

Step 1: Create a custom list called Phone Book.
Step 2: Open the site in SharePoint Designer 2010 by clicking on Edit Site in SharePoint Designer action off of the Site Actions menu.