You can easily copy the details of one campaign and create a new version of it by cloning the campaign.
To do this, select the "Campaigns" tab and find the campaign you'd like to clone. Select the 3 dot menu to the far right of the campaign name and click on it. Select "Clone" and a new campaign with the same settings and customizations will be created! You can then edit the new campaign just as you would edit any other campaign.