How do I change the spacings between the scale points in a matrix likert scale?

There are a few of different things that impact it:

1. The width of the statement column
2. The width attribute of the cells in the tr.answers row
3. The left/right padding of the cells the tr.answers row
4. The font size of the text in those cells

To change spacing in Qualtrics Likert scale matrix: Edit the question, go to "Customize," adjust "Vertical" and "Horizontal Spacing." Save changes.

The easiest way would be to change it’s width using ‘%’ operator to maintain it throughout devices or any device like below:

jQuery('.c4').css('width','5%')

Where do you find “Customize”? Could you perhaps show with a print screen? I can’t seem to find it. Thanks!

Tagging @Sameer.65