Getting into room with friends.

Hey i have been wondering is there anyway u and ur friends can actually join the same room to play together other thant finding some random shuffle of union war room where there is just nice some slots for us?, i dont mind playing with other player just that my friends and i are definitely be in the same room to play together

it's called team fight

Open arena,look at top right see a button that says Team Fight beside arena?
click it

with Teamfight, you can choose your own maps, even lock it with a password so no one will enter.
You will find it at the top right of the "Arena" window

ok i found it thks