Change Portfolio home's widget to 3 columns

Hi folks,

there is any configuration to change my portfolio’s widget for home to show 3 columns instead of 4 columns? If not, which file I can change the bootstrap class col-md-3 to col-md4 (that will attend my need).

my website:

Thanks in advance!

I’ve found the file!
It is in shapely-companion’s plugin:
line 59.