New with BP Multi Network

Good morning,
Sorry Im newbie with BP Multi Network and a little scare to use it (first time)

Using Buddypress with a network now, I need to find a solution to have different communities with my subdomain. each subdomain are mapped domain. ex name1.network.com = name1.com
I create 12 different mapped domain and each of them show activity of other mapped domain due of buddy press network

Question 1 : does BP Multi Network allo to create different communities and show only infos of this communities on the network ?
Question 2 : when deactivating buddy press and buddy press plugin , just erase all bp line is right to create different communities ?

Thank you very much for your answer