You need discord webhooks to receive notifications in a discord channel of actions that the bot is performing, for example when a task checks out. You also need a webhook for paypal checkouts.
To setup a webhook for Carnage you need to go to a private Discord server, open a channel and under server settings you should see a tab called "Integrations":
Select "Create Webhook" and select the channel that you wish your webhook to be sent to.
After selecting the channel for your webhook, click "Copy Webhook URL".
This is the part that you need to enter into Carnage.
When you first launch Carnage, a folder will appear on your desktop. This folder will contains 9 files, these are Accounts, Logs, Proxies, Profiles, Quicktasks, Tasks, Amazon Session, Settings and Success. Within the settings file, you will be able to input your discord webhook URL. To do this, simply open the file with Notepad and scroll along until you find the "webhook" section. Here, in-between the quotation marks, insert your webhook URL and save the file.
An example of this should look like: