I have a design that requires a portfolio section. The portfolio has multiple collections. For an example on the list page I would have Collection 1, Collection 2, Collection 3 ect. and under Collection 1 I would have table, chairs, couches, ect. I don't know how to output this when in composer there is only tags. So right now, my list page has all the arrays of the pieces, but cannot group the pieces into collections. What would be the easiest way to do this.

thanks for the help in advance.