If you need to be sure to create a new instance or want to start a fresh run with a group of friends, you will need to host your own game. These steps below will help you do that!
1) Firstly, you will want to open your Sector Map and select Host Game.
2) Next comes where you choose what zone and which sub-zone you want to go to specifically. You can even set up a password in the bottom left!
Happy hunting!