How to add multiple codeception suites to different folders in one project?

I have the following folder structure, I want multiple test suites to exist in different directories.

• project

  • app

    • app-A

      • tests
        • (functional tests here)

    • app-B

      • tests
        • (functional tests here)

  • domains

    • domain-A

      • tests
        • (unit tests here)

    • domain-B

      • tests
        • (unit tests here)