work with branches in multisite

HI,

i have client with restaurant site.
this restaurant has couple branches.

now the question is how to make this work in the right way on multisites.

i have created him site(in my multisite) with url restaurant .mysite.com
this subdomain is maaped to http://www.restaurant .com

the question is now how to connect other branches?

i created new site in multisite with url restaurantbranch.mysite.com
i want to connect this to the same domain but with some path like:

http://www.restaurant.com/branchname or

branchname.restaurant.com