This type will let you create a drop-down menu (or is it a drop-up?). To add a new link, fill in the parameter values and click on "save". The link will appear in the "Custom Menu - Links" section. Add as many links as you like. You can drag each link into the position you want. By hovering over each link, you can also edit, delete, or preview them.

See Other Link for a description of each parameter.

Menu (from menu manager)

This is the same as Custom Menu, but simpler. Instead of adding each link individually, just select one of the menus from your site.

User

The User button type is a Custom Menu fork. The principal is the same. Unlike Custom Menu, the menu will only be displayed to logged-in users. For everyone else, the button will be replaced with a login link, which you specify in the Login parameter (works with placemarkers).