HOW TO create an alias / aliases

hi
i don’t think there’s much about alias in Hestia’s documentation
https://docs.hestiacp.com/search.html?q=alias&check_keywords=yes&area=default

to make things clear and simple …

if i had a sub1.domain.com in hestia, UserA, the site is up and running
and i’d like next2.website.net, in UserB, to lead blindly (the visitor won’t see sub.domain.com but next.website.net in his web browser)

i would
create a domain next2.website.net in UserB, and add the alias of sub1.domain.com under next2.website.net name field?
or use the redirect option above SSL settings?

or
the other way around?
: add next2.website.net as alias in sub1.domain.com?

so far, it’s just not functioning …

#nextcloud #multipledomains

what sort of SSL certificate could i possibly meet, when i create an alias between two different domains?
website.net
domain.com?