Changing the path of a domain and adding addon domains?

[kickthemooon]

for example i have this main domain
blablabla.com
i also created the nameservers with this domain and namecheap.com
ns1.blablabla.com
ns2.blablabla.com

the directory this domain is pointing to is the /public_html/ directory.
the goal i want to achieve is to point this domain to public_html/blablabla.com/
and i want to do that with every other domain i add to the webserver.

any suggestions? i would appreciate it alot.

thanks.

[kickthemooon]

anyone here guys??

[skid]

I would suggest to use mod_rewrite rules in .htaccess