1.Click on this KDA icon located on top right corner,
2. You will see there is icon like bubble thingy,
3. Just click on the icon and if it shows as picture below, then you've succeed in muting a player in-game,
Notes:
- The muted player can still read your chats but not you.
- Attack/Retreat/Request Backup Alerts are still functional between you and the muted player.


How To Report a Player In-GameAfter every game ends and results shown, that's where you can report a player.
1. On top right corner, you can see there is 'exclamation mark' icon visible in red. Click on that.
2. After you clicked on the icon, beside each players Hero icon will shows the exclamation mark. Choose which player you want to report (Multiple reports are possible),
3. New window will pops up for you to choose what kind of violations the reported player did.
* Going AFK: A player who went AFK during the game.
* Negative Gameplay: A player who was deliberately feeding to enemy players, etc.
* Using Cheat: A player who purposely use cheat/hack tools in-game.
* Foul Languages: A player who uses bad words, racism, etc.



Cheers,LaughCof