Personalizing the Application 
The following sections describe how you can simplify the SAP user interface to meet the work requirements of specific users or user groups. Application personalization can often be undertaken using simple methods (outside the ABAP Workbench). Modifications to the standard are usually not necessary. Modifications are only mentioned if they do not create a lot of extra work at upgrade, or if they are unavoidable.
In the following, this documentation provides various example tasks from the working world. Each example introduces the tools used to adjust the SAP user interface to the desired task and discusses the restrictions you need to pay attention to when using these utilities. The documentation then goes on to discuss the rules that apply when you combine certain functions.
When choosing tools, make sure that you use the same ones consistently in similar situations (when installing the SAP System or within the same SAP component) for tailoring the interface of the SAP System.
The following examples are designed to give you an overview of the various Personalization possibilities available. Each section contains helpful references to additional literature within the SAP System.
Defining Default Values for Input Fields
Revoking an Element's Ready for Input Status
Personalizing the Possible Entries Help
Inserting Pushbuttons for Frequently-Used Functions
Displaying Possible Entries for Fields
Simplifying Screens for Specific Users