You can create a default budget per template in the template overview. When this template is selected by our technology and the campaign is set in draft the default budget will be chosen. If you want to adjust the budget you can do so when the campaign is still in draft mode.
Furthermore, you can create a Package with the desired budget per channel. The packages have unique IDs that you can, then, integrate in the XML. The campaigns will be automatically created with the chosen package.
If you have any further questions, please reach out to our Support Team via email at email@example.com