It can be difficult to include the typical TABLES PERNR. selection screen into a tabbed layout when working with a SAP Dynpro interface. Developers must make sure that the option to select a personnel number only shows up in the specified tab and not on the main screen. Subscreens and efficient user command handling are necessary for this. A smooth and well-organized user interface can be attained by appropriately organizing the selection screen and controlling navigation with sy-ucomm. In HR modules, where users frequently filter employee data based on people numbers, these strategies are very helpful.