Using IIS Manager, you go to the site
Edit Site Bindings...
Select the https (443)
The select the certificate from the list
Sometime you need to bind SSL certificate to a process or an application. If the application has got an interface or GUI to bind to an SSL certificate, great!. If not, then you need to follow the process here:
Get the application ID, by running WMI query:
wmic product list
This query produces a list of application name, its identifying number and install location
Get the application identifier number (highlighted)
The next step is to get the SSL certificate hash/thumbprint. To get this you can either run:
netsh http show sslcert
or
Get it from the certificate itself
Finally you can bind it using the following command:
netsh http add sslcert ipport=<ip address>:<port> certhash=<cert thumbprint> appid={<app id>}