Currently you can assign a single country label per campaign, lander and offer.
In the case you wish to run a campaign that is targeted to multiple-geos, then you will leave the country selection blank (Global) within the campaign's settings.
Follow the guidelines below to configure a multi-geo campaign;
Add your landers and offers, set the target country individually for each.
If you leave country field blank while creating the lander / offer, it will be treated as 'global'.
Once you have finished adding the landers and offers for your campaign , set up your campaign using “global” as the selected country (the default setting).
Then you’ll have an access to choose all landers / offers regardless of the country label which they've been assigned with.
* For instance, you won’t be able to choose a lander or offer labelled as Brazil from the drop-down list while the campaign’s country is set to Russia.
Landers and offers with the country label set to Russia and Global will be visible within the drop-down list
Note: Country labeling within a campaign and it's associated entities is solely for organizational purposes and does not serve as a means of geo-targeting traffic.