The following configuration tasks are optional:
Configuring Central System Landscape Directory Usage
Configuring Central ES Repository Usage
Configuring the Change and Transport System (CTS)
Configuring the Change Management Service (CMS)
Configuring Advanced Authorizations
Configuring message archiving for the Advanced Adapter Engine
Configuring the documentation editor
Configuring Online Help for the PI Tools
Connecting ABAP Backend System to ES Repository
PI System Security - Advanced Options
Customizing E-mail Notifications