Subdomain and Redirection Issues I want to solve

[Being11]

Hello Everyone, Hope you're doing well. Today I need 2 solutions.

First: I have purchased a domain from Namecheap and connected to the Shopify store. How can I make a subdomain for it and connect to Shopify?

Second One: For example, I connected a subdomain name: test.example.com. Now I want to redirect this subdomain to an outer link . so that when someone clicks to test.example.com it redirects to amazon.com.

Thanks in advance