title: auto load attributes to certain category from frontend in woocommerce
body: <p>i'm using wordpress and woocommerce and dokan for multivendor ecommerce site</p>
  
  <p>the marketplace website will have multiple categories, each categories have different attributes.</p>
  
  <p>example: </p>
  
  <ol>
  <li>Category: Clothing - attributes: size, color</li>
  <li>Category: Smartphones - attributes: screen size, processor, RAM</li>
  <li>Category: Car - attributes: make, model, year</li>
  </ol>
  
  <p>so what i need is when vendor add product from frontend, after selecting certain category certain product attributes will load and vendor then have to enter/select the attributes.</p>
  
  <p>than this also will be used when user browsing for certain categories, then certain product attributes filter will be load also. </p>
  
  <p>does anyone know how to achieve this?</p>