- Open Tweetdeck
- Click on the little wrench icon in the top right corner
- Then the following box will open, and you will need to click on the notifications tab.
The red and blue arrows signify the two visuals that pop up on your screen and you can turn off one or both. I have both of mine turned off because they just get too distracting for me.
The yellow arrow highlights the volume bar for the notification sound. I have it turned all the way down, which may be a good alternative to turning the notifications off altogether.