[Plugin: Formidable Pro Forms] More than 8 fields in a row/section

I have Twenty Sixteen theme and Formidable Pro forms plugin installed. I am trying to build a form that has multiple columns in a row. The section in Formidable Pro allows me to have up to 8 fields (per section), but I need 20 fields in a row. What would you suggest me to do? Should I try to find a solution by adding the custom css code which would increase the maximum number of fields within a section? Or there is some easier solution that I haven’t noticed? Thank you for any hints or ideas!