Symptoms
There is no option to exclude a domain when accessing the SSL/TLS cPanel interface for AutoSSL.
Description
When I try to exclude a domain from the SSL/TLS Status interface from within cPanel, I do not see the option to exclude a domain from AutoSSL.
Workaround
You will first want to verify the user is enabled through the WHM: Home » SSL/TLS » Manage AutoSSL » Manager Users and then check the cPanel interact again. If enabled, this option will not be visible if the domain has a non-AutoSSL certificate installed as well.
For more details, please see the official documentation at SSL/TLS Status.