1. To blacklist a number/lead navigate to the Leads section:
2. From the
Leads section click on the hamburger menu on the top right and select "
Blacklist lead" option:

3. In the new window enter the phone you would like to blacklist and select the Blacklist type and click save, after this the number will be blacklisted:

System: Will blacklist the number entirely throughout the Matrix, regardless of the campaign
Campaign: Will blacklist the number only for the campaign you selec
To remove the number from the blacklist, click on the action button next to the respective lead and select "
Remove from blacklist":
