Application Administration is an optionally-installable component of iSeries™ Navigator. Application Administration allows administrators to control the functions or applications available to users and groups on a specific server.
This includes controlling the functions available to users that access their server through clients. If you access a server from a Windows® client, the operating system user profile and not the Windows user determines which functions are available.
Application Administration controls access to any application that has a defined administrable function on your server. iSeries Navigator and iSeries Access for Windows are examples of applications that have defined administrable functions. For example, you can grant or deny access to the Printer Output function in Basic Operations or grant or deny access to the entire Basic Operations administrable function in iSeries Navigator.
How does Application Administration work?
Application Administration provides a convenient graphical user interface (GUI) that allows you to control the functions that are available to users and groups. When a user accesses an administrable function, the system reads the user's access setting to determine whether or not the user is allowed to access that function.
What are the Central Settings?
Previously, you were able to simply deny or allow access to a function. Now you can set up an administration system to centrally manage many of the properties used by iSeries Access for Windows clients and work with advanced Application Administration settings (Central Settings). These new settings are equivalent to the Client Access Express Policies.
If
you have configured an administration system, you can work with the Central
Settings on that system. An administration system is the only type of
system that contains Central Settings. You can use the Central Settings on
the administration system to manage which applications are available to users
and groups. With the Central Settings, you can also customize advanced
settings for users or groups. 
These advanced settings
allow you to control what environments are available to specific users and
groups. Also, the administrator, through the advanced settings can control
password, connection, service, language settings, and specify if you want
to automatically determine if new plug-ins are available for installation.