This document provides an introduction and agenda for a seminar on plugin development for Lotus Notes, Domino and Sametime. It discusses what plugins are, why develop them, and provides an overview of the key Eclipse extension points and APIs that can be used to build plugins that extend the functionality of Lotus applications. The agenda includes topics like the Eclipse and Lotus Expeditor Toolkit, plugin basics, building UIs with SWT and JFace, threading with Jobs, logging, debugging and deployment.