如何在UITableView中拥有更多行的同时使特定的UITableViewCell在屏幕上可见

I am having 20 rows in a table view, and I have designed (or say resized) UITableView in half of the screen (Using IB) and in half screen I am showing the stuff related to particular UITableViewCell. Which cell's details are going to be shown in the half screen is decided runtime. I want the cell being visible while loading the view for say second last cell.I am having 20 rows in a table view, and I have