If you already have numbers in your unassigned pool you can use them to add to campaigns that you create. To access the unassigned pool follow the instructions below.
Click on the "Account Tab" at the top of the screen.
Then select the "Unassigned Number Pool" sub tab
In this screen you will click on the number that you want to move to the campaign you created.
After clicking on the number you will be brought to a new screen with a campaign drop down menu. Click on the drop down and select the campaign you want to move the number to then click Update Trackable Number at the bottom.
*If you have a session campaign that you are trying to move a lot of numbers to please contact support and we can move the numbers for you in bulk quantities - firstname.lastname@example.org