Creating a Simple Email Waterfall Template with AI Prompts

Looking for help with creating a template. I want to build a fairly simple template. Email waterfall, with hygiene, and a few simple AI prompts after. I opened a new workbook, but I cant just build a template. My goal is to import a CSV into Clay and have it run the waterfall and AI prompts automatically. It seems like I need to first build all the column headers that my csv will have, then, build out the enrichment headers that I will need? Is that the righty process. Can I then, just import directly into a template? Not sure the best way to do this.....