How to apply an existing label to multiple campaigns in ActiveCampaign

1. First navigate to Email and click on "Campaigns" in the left sidebar menu
2. Next use the checkboxes to select all the campaigns you want to label
3.Click on the "Add or remove labels" dropdown that appears
4. Then a small modal will appear showing your existing labels
5. Finally scroll through the list and check the box next to the label you want to apply