Item Assembly

Hello Community,
I have a prospect which are into item configuration industry. So they have a template with the list of items - Preferably a type of landing page, which their customers can see and select the items that will be assembled into a finished product. So here, the customers are selecting their own configuration (assembling) → the prospect shares the pricing calculation with their customers → if the customer is happy they will purchase it.

How can we implement such a scenario in Acumatica, since the prospect wants to give their customers an option to configure the products as per the need by themselves.

I came up with the Product Configurator/BOM & Kit Assembly scenarios in Acumatica but then how these would be displayed up in the customer portal. And if customisation would be required then at what stage/level.

Thanks in advance.