Profile column widths

Please someone teach me how to edit the profile column widths, I need to change the left narrower and the right wider to fit well my widgets. Like this: http://www.atin2.com/profiles/Jlbriones. Thank you.

admin-Builder-pagesBuilder and profile

Builders/Pages Builder => Profile

Below Active Blocks you will se Column1 and Column2,

below this 2 Columns will you see a green arrow,

if you move this arrow to left or right you will change the column width...