How can I Zoom In a chart much higher

I would like to program a normal chart with only 6 bars. These bars must be much larger than the maximum we've got through the Zoom In function.
Of course I can Scale Fix the range through the Chart Properties, but I would like to let MT do this automatically.
Does anyone know how I can solve this?

Thanks.

use the chart shift button?

Sorry, that's not what I mean nAVIN2007. The chart size must be the same.

I want an upsizing of the bars, so that only 6 or a few more bars remain within the chart parameters on my screen.