WIX Website Plan

Hi, my name is fahri, i own a small business that print paper wedding invitation, but after covid less people want to create a paper wedding invitation, i had to fire some of my employee and i’m tryng to create a new invitation from wix website.

So basically i want to create wedding page invitation for my client, using various wix wedding template.
So in my main website you can choose 5 themed page. (ex: Web 1, Web 2 , Web 3 etc)

My question is

  1. how to connect the 5 example web to show on my main web?
  2. how to create a page for my client, but still under my main website domain? I only knew create new site, which is creating new domain etc.

i know it seems very simple , but i cant understand it.
sorry for bad english