I enabled the One-click cloud deployment option but now I cannot find where to “click” for the One-click cloud deployment 
Hi,
This functionality is available if the docker plugin is enabled. Please check if the docker plugin is installed and enabled in your intellij idea. Also make sure that the Jmix plugin is updated to the latest version.
If the problem is not solved, please attach more information about your environment (intellij idea version, Jmix plugin version, OS).
Best regards