How to get an SSL for a second domain and direct to the correct page?

[Fenrirme]

Hello everyone,

I have an issue that needs assistance. My client has multiple URLs for his website. One is the main URL for his store. The second one is for a new product that goes along with the first one but is different enough that it needs its own url.

Issue: We need the URL for the 2nd domain to have an SSL cert (https://) while also sending customers to the correct page for that domain on his website. 

Right now we were finally able to get the domain to have an SSL but it doesn't direct to the right page, but a week ago we had it going to the right page but it did not have the ability to receive an SSL.

I am wondering if there was anything i was missing either with shopify or 3rd party that would allow us to get an SSL for the domain and have it point to the right page.

Thank you for your time and assistance,