Anyone familiar with Website Optimization in CPanel?

I wonder if you can select only a certain group of files/folders for gzipping and if you can undo it again afterwards for any editing if needed?

#cpanel #seo #buildinpublic

My main domain is having an SSL certificate but who can help me explain in clear detail how to use that same certificate for a subdomain!? Breaking my head over this one. #buildinpublic #cpanel #domains