One CNAME can be used for multiple landing pages
EngageBay CNAME setup allows the configuration of an "Optional Directory". This will allow you to use one CNAME you have set up and get it configured to multiple landing pages. Each unique optional director set can create a unique URL to be configured for one landing page.
Example: You created this CNAME - https://newproduct.yourdomain.com
Say you have 3 new products and you have one page for each but you want to use the same CNAME. Then, you can simply assign a unique optional directory for each product. Let us say you assign optional directory product1 for first product, then product2 for the second product, and product3 for the third product. you can then create a unique URL for each page for each product using the same CNAME as shows below
First Product - https://newproduct.yourdomain.com/product1
Second Product - https://newproduct.yourdomain.com/product2
Third Product - https://newproduct.yourdomain.com/product3