How to enable microsites in tutor version?

Hi folks,

How can I enable microsite in Tutor with a different theme for each site?

They are now called Sites.

You can take a look at my method: Multiple Sites: What is the Best Method?

The other settings you can change are listed here:
https://edx.readthedocs.io/projects/edx-installing-configuring-and-running/en/latest/configuration/sites/index.html