How to set up DOTA 2 with Immerse?

Please follow the following steps.

1. Go to Game Settings Menu → Audio 

2. Set Sound Device to " Speakers (Immerse HIVE)" in the 'Sound Device' dropdown menu. 
3. Set Speaker Configuration to " 7.1 Speakers".
4. Click Setting to go back to the dashboard.

You can also refer to this link.