Navigate to your settings by clicking the gear icon in the upper right-hand corner of the window.
Click on Notifications.
Search for an existing notification by using the search bar or selecting a category.
Select the specific notification to edit.
You should see a screen with a switch button and right arrow. Click the switch to toggle notifications for that channel on/off, and select the right arrow to edit the conditions for the notification.
The conditional editor lets you set a notification schedule, filter for only certain criteria, or use the advanced filter to select a table and more specific filter conditions. Click the checkbox to see advanced filter options.