With the template settings dialog open, if you have permission to edit the template, you'll be able to change the name, as well as the widgets shown in the template. Be careful, since all changes are live for all users using the template for their dashboard. In cases where you do not have permission to edit the template, you'll see an option to Duplicate (#1 above) the dashboard template, and create your own based on the one shown. Instructions for the User default and Account default options can be found below (#3, #4, respectively)