In How can I change the message format of WebUI.comment("msg")? + logging into FILE I described how to overwrite the Logback configuration dynamically. It worked. But I am afraid that technique is not very easy.
@devalex88 once expressed his opinion:
Yes, this would be the most intuitive method of customizing Logback setup.
KS v6.1.2 does not support looking for the Logback configuration file in the current Katalo project. Katalon Studio app needs to be changed.