Create a new zone invocation tag whenever you create a new zone, and put the tag on the website where banners should be displayed.
If you create a new zone in Revive Adserver, you will be able to link campaigns and/or link banners to the zone. However the zone will not really "exist" in the real world until you create a zone invocation code for the zone, and inserted the invocation code into the website's HTML code in the appropriate location.
Only once this has been done will Revive Adserver have a way of displaying banners on the relevant website, via the zone.
If you have not already created a zone, first, create a new zone.
To create a new zone invocation tag, go to Inventory > Zones:
If necessary, use the drop down menu to select the appropriate website, and then click on the appropriate zone name. This will take you to the Zone properties screen. Click on the Invocation Code tab.