Domain: Name Server Connection to Namecheap

I am trying to connect a domain from Namechap to an account.

The instructions on Wix are clear. However, on Namechep they now have Wix as an option for a DNS template. Does this mean that all I have to do is select this from the drop down menu to connect to the name server?

Also, when I attached the domain via Wix, I did not include “http” or “https”. It appears that “http” was automatically added, but I believe it was “https” before. If so, will this update automatically?