H2S Modeling Workflow

Greetings

I am working on designing a sewage network in a domestic area, and we were asked to study the odor issue due to low population.

I carried out a search for such task and fund in help that there is an option of H2S Modeling Workflow. from our help ribbon, it was raised to turn on this option from calculation center. while I didn't find such options.

And also please give me a quick description and how it work.

thanks in advance

Regards,

Peter Nashat