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That was helpful for getting Jenkins setup originally, but (unless I'm missing it) there isn't any information there about splitting the tests across multiple machines.
Both of these describe how to run different project suites/projects/tests in Jenkins
https://support.smartbear.com/testcomplete/docs/working-with/integration/jenkins/running-tests.html
https://support.smartbear.com/testcomplete/docs/working-with/integration/jenkins/pipeline.html