Need help for Content locking campaign

Hey guys i want your help.
i have joined cpagrip and i want to make a content locking campaign but i wanna know that when i will done locking some content than for what countries will be allowed for that offer ?
like people need to complete a survey to unlock the file so for that worldwide traffic is allowed or a particular countries traffic ?
can i choose offer for my self for content locking ?
what are the payouts for this kind of campaign ?