External Dashboard for creatives/partners to see how much of they have sold on our site

I currently designs and sells merchandise (T-shirt & Sweatshirt) on shopify directly to customers, but my next stage of business is to allow some selected partners/Creators be able to sell their products via our shops. I am looking for an intuitive application or solution that provides the ability for the various partners to be able to the following below without having access to our shopify backend where the store is currently hosted.

  • Dashboard area for creative (Bio, Campaign overview)
  • Number of their products in stock
  • How many products have been sold? (Weekly/Monthly/Yearly report)
  • Total earned from sales of their products
  • Pay out via Paypal / Bank Account.