How to manage properties file to handle application having multiple Schema/Database?

I have an application which has multiple schemas with different username and password. How can I have my properties file to handle this use case so that I can update changes for all schemas by using a single command?

For example, here is the folder structure of application-

Schema1-folder/ changelog.xml
Schema2-folder/ changelog.xml
Schema3-folder/ changelog.xml file
rootChangelog.xml file → this has path to schema level changelog file.

How can I call command liquibase update --changelogFile=rootChangelog.xml which will update changes to all schemas?