Enterprise Manager 10.2 is not dependent on Operations Manager and Health Center and can be controlled through MicroStrategy Command Manager. The operations that can be performed from Operations Manager > Enterprise Manager such as creating environment, creating data load and running data load etc., can now be done through Command Manager.
The PDF Document linked covers all the different configurations and actions that can be performed in Enterprise Manager 10.2 by using its respective Command Manager Scripts.
the document is quite useful to know about key configurations/steps/best practices to configure Enterprise Manager in MSTR 10.2 – Please read it and make use of it. Happy Reading!