How do I change the font and alignment of x- and y-axis labels and units?

To update the font and alignment of the axes titles :

1. Go to 'Global Settings/X(or Y) Axis' section.
2. Under Title, select alternative alignment.

To update the font of the axes labels:

1. Go to 'Global Settings/X(or Y) Axis' section.
2. Under Labels, click on the 'A' icon to update the font style.