To set up a Campaign go to Configuration > CRM Setup tab > Campaigns. Click on the +Campaigns button in the top right corner to create a new Campaign.
Once on the Create Campaign screen, fill out the following fields:
Name: Name your Campaign. The name you enter will be able to be selected when updating a Pulse Number.
Is Active: Set if the Campaign is still in use or not.
Tags: Tags gives you the ability to group. Each Tag created can be reported on.
After creating your campaign, make sure you go back to your Numbers and assign a campaign to each number.
What is a Campaign?