How can I show in the Waveform Graph Only a part of the scale

This is the first time I try to use Waveform Graph, since now I used Waveform Chart.
The reason I moved to Graph is that I need to Cursors.

I have 2 problem

the first: in chart the graph moved when I add a new data and the scale of the X axis remain the same size, in the right size I always saw the new data. How can I do that with the Waveform graph? 

The Second: how I tell Labview to put the cursers where I click on graph, I need that because when move in graph I lose the cursers, and to bring it I need to zoom back I drag the cursers.