You create dynamic elements in the same way that you create other elements: by clicking buttons in the toolbar or using the menu commands. In WebObjects Builder, there are two toolbars that allow you to create dynamic elements:
allows you to create dynamic form elements. See
Creating Form-Based Dynamic Elements
for more detailed information about working with forms.
allows you to create other types of dynamic elements. See
Creating Other WebObjects
for more details on each type of element.