Edit semantic model in Power BI service

[asharrichardson]

We are using Power BI Service with a premium (per user) license to publish dashboards to.  I wanted to be able to edit the semantic model on line.  I found the below article, but when I go to Power BI Service>Workspaces>Prod Workspace>Workspace Settings

I do not see Advanced as an option.  I went to about, and I don't see it under about either.  

Can somone tell me how we can edit the semantic model in Power BI service?

https://learn.microsoft.com/en-us/power-bi/transform-model/service-edit-data-models#enable-the-previ... 

Here is our Workspace settings options for this premium workspace.

[lbendlin · Accepted solution]

Refer to this list of considerations and limitations

Edit data models in the Power BI service (preview) - Power BI | Microsoft Learn

And the big white elephant in the room:  

AutoSave

As you made changes to your data model, your changes are automatically saved. Changes are permanent with no option to undo.