Campaigns
Country targeting, or GEO-targeting
Country targeting — GEO-targeting, on the pricing page — narrows who may deliver a campaign. Members connecting from anywhere else are never handed it.
Where. The Audience step of the campaign builder.
On what. View campaigns only.
With. Premium or Pro — what each membership includes.
How many. As many countries as you like, added one at a time.
It costs speed, and that is the whole trade. A narrower pool is a smaller pool. The campaign builder quotes a narrowed campaign from other narrowed campaigns once enough of them have run, so you can see what it costs before you choose it.
Leave it off and anyone may deliver. What else changes delivery speed.