Plots:
Left-click on the y-axis: The axis color turns yellow.
Then Right-Click somewhere in the same window: A gray window appears.
Here choose "Properties": The "Y-Axis Properties" Window appears.
Choose the "Scaling" Register and uncheck "Autoscale": Now you can enter the values you want.
Pictures:
Just zoom for the right scale.
You can adjust the with of the picture by moving the left border of the model window.