Hi brent,
Yes, those are three different zones. (zone is the place where you want ads to appear, in your case 3 individual zones). So you need to create 3.
If the creatives (the images) are all the same you can just link a single banner to three different zones. And then you copy the code for each and paste.
Were you able to at least see the ad in your website?
I'm not sure they offer support, maybe try reading the docs it's pretty good. The hosted version is the same.
https://documentation.revive-adserver.com/