Not sure where I find the "incremental jog step size". Is it this table? If it is which one?
Yes, all of them.
From the operation manual:
2.2.4 Jogging Tab
The jogging tab, figure 2-20, displays controls for jogging the machine’s axes and changing the jog mode.
Figure 2-20: Jogging Tab
ï‚· Operator Control Selection: These are the tab markers. Select the desired tab by clicking on its name.
ï‚· Jog Buttons: Buttons to jog X, Y, Z and A axes.
ï‚· Cycle Incremental Jog Distance: In incremental jog mode each press of an axis jog button will move the machine on a specified distance, this button cycles through the distances defined in the general configuration. The current step distance in shown in the adjacent DRO.ï‚· Toggle Jog Mode: Toggles between continuous and incremental jog modes.
 Jog Rate: Sets the velocity for continuous jog as a percentage of the machine’s max velocity.
ï‚· Toggle Keyboard Jog: Turns on/off the ability to jog using the keyboard.
However, it could also be a setting in the shuttle pro plugin. Or a function of one of the shuttle pros buttons to alter the step size. I have only played with the shuttle pro briefly though so cant say for sure.