To enable users to use Session Manager, you must make several modifications. The user's TSO/E logon procedure must invoke a program that attaches the Session Manager initialization task. Therefore, you must either change the existing logon procedure or write a new one. You may have to modify the message control program and the message handler. You may also have to modify initialization parameters in a SYS1.PARMLIB member, TSOKEY00 or its alternate.

For information about how to make Session Manager available to your users, see Setting up a Session Manager environment.

There are several ways you can customize Session Manager. You can customize the IBM-provided environment definition, you can provide your own environment definitions, and you can write Session Manager exits. The environment definition defines the user's screen layout, program function key definitions, and stream defaults. You can use the IBM-provided definition as is, or you can modify the IBM-provided definition. You can also provide multiple definitions so different users can use different definitions. Multiple definitions allow you to customize the environment definition to individual user needs.

Three Session Manager exits allow you to monitor a user's interaction with Session Manager. You can write an initialization exit, a stream monitoring exit, and a termination exit. IBM® provides no defaults for these exits.

For information about defining and customizing Session Manager, see Session Manager.