Welcome to Shopify. My name is Olivia and I work here.
We can certainly help you brainstorm a few solutions to achieve a set up like this. To make sure we give you the support you need, can you tell us if you're trying to set up product quantity limits per customer? Or maybe you are trying to create special access for select customers on certain products?
Any insight you can provide would be greatly appreciated.
I look forward to connecting,