With YITH Multi Vendor you can turn your e-commerce store into a marketplace (a multi-vendor platform) like Amazon or Etsy. Turn your e-commerce store into a marketplace (a multi-vendor platform) and earn commissions on orders generated by your vendors.
Thanks to the integration with YITH Product Size Charts, also your vendors will be able to create their own size charts and use them on their own products.
After installing and activating both plugins, enable the Product Size Charts module from YITH > Multi Vendor > Modules.
Now vendors will be able to see a Product size charts menu where they can configure their charts.
For more information about how to set up the YITH WooCommerce Multi Vendor plugin, please take a look at the full documentation here.