@Laxman Chinnannavar you can add more panels, click right button in graph area, and select 'Add panel above or below'
you can zoom on x direction by placing cursor 1 (left button), cursor 2 (middle button) and zoom between cursor (right button->zoom cursors)
You can drag a waveform label into another panel and see more waves in a single panel. You can delete unused panels as well.