This feature is only available to Admins
If you have previously created campaigns, you can duplicate them which will copy over the campaign settings, including the Default Country and Info to give you a head start on setting up your campaign.
To duplicate a campaign, go to the menu and select "Campaigns".
From this page you can see all the campaigns that are currently set up and you can set the default country for all campaigns you have set up. To duplicate a campaign, click on the three dots across from the campaign and select Duplicate Campaign.