You can manually exclude an ad placement with ClickGUARD in 2 ways:
from placement forensics
from the Exclusions Dashboard
Excluding from forensics
When you're viewing placement forensics, you can simply click on the "Block" button in the top right corner:
Configure your exclusion period and enter a reason, and then select the campaigns for which you wish to exclude the given placement:
You can also chose to exclude for all campaigns.
Excluding from Exclusions Dashboard
Visit your Exclusions Dashboard and hit the "Exclude Placement" button in the top right corner above your Exclusions table:
Enter one or more placement domains you wish to exclude, configure your exclusion period and enter a reason, and then select the campaigns for which you wish to exclude the given placement:
You can also chose to exclude for all campaigns immediately.