There are ways you can use Group By in Power BI is by leveraging the use of Power Query.
Here is how you can use group by
Click Transform Data in Power BI
After Clicking transform data, Power Query will open up and you have to select Group
Below image shows how group by diablog box looks
We will group by using state,
New Columns Name is Total_grocery_sqrt as
Operation is sum because we want to sum all the grocery_sqft
Below is the resulting table
You can re-check the applied steps for assurance purposes
Depending on your use you can save it or just close the window
Thanks For Reading!