When you launch a modeling tool for the first time, the Select Perspective dialog appears with the ability to switch between perspectives.

 Select Perspective

Element Name
Description
Full Featured
Quick Start
Software Architect
System Analyst

List of the available perspectives with the
predefined configuration.
Expert

Choose Expert mode only if you are an advanced user.  All features and commands will be loaded.

If you are a new user, you should not select Expert mode.The non-expert mode only loads the basic and most important commands and features.

Customize

Open the Customize Perspectives dialog to customize the selected perspective. You can make your tool less complicated by hiding irrelevant features or commands.

For example, you can group functional features, show, or hide selected commands.