Etilize is integrated into your Zometum account by default and is included in your subscription plan.
To see if Etilize is still integrated into your account, Navigate to Settings -> Integrations tab and you would see that the Etilize integration would be in the connected state.
How does it work?
Etilize integration would give you access to a suite of products, catalogs, and descriptions that you can use within your proposal.
Here is a helpful video that shows how this integration works.