Hi
You need to scroll the table control in order to add more records than what are visible in the table control.
Please go through the following links regarding scrolling in table control.
http://scn.sap.com/thread/3294988
http://scn.sap.com/thread/477098
http://scn.sap.com/thread/557467
http://scn.sap.com/message/506135
Regards
Swati