These are the icons presented to players to represent the different channels you scenario uses.
You can find lots of free icons to use at FlatIcon https://www.flaticon.com
To change the channel icons of your exercise:
Go to Style > Virtual Desktop
Additional changes for your icons
You can decide if the channels should be revealed when they first receive content or if they should be shown from the start before any content.
Hiding Channel Icons
Before uploading your exercise, chose how you want your channel icons to appear:
