HI. I have reread your job post with care, and I think this job requires some deep customizing that page. So for now, I have following questions:
(A) For now, I can only 5 Brands(is it vendor ?) in that page, so how much vendors do you have ?
(B) You said "...a link to go to vendors all products...". you mean a link to a collection ?
And as for some minimal problems, please discuss more.
Regards.