ssl on only 1 directory

Hello

I have a multidomains server with ispconfig2. I purchased a digital certificate for a domain, the domain has a dedicated IP. When I call https://mydomain.tld the certificate is OK. but I want the ssl only in 1 directory of site: the main site is http://mydomain.tld and https://mydomain.tld/catalogue
where I must write the directory for https?

thanks

 

any idea? Thanks!

 

any new suggestions? Unfortunately I can not upgrade to version 3 on this server ... Thanks a lot