SQL Server Report how to create multiple groups with hidden details

I have created a report that has multiple rows returned from one query. I have a chart that is created for all the row and I have it grouped on the server location. the group properties of the details group i have visibility set to hidden and set to display when toggled. I want to do this for another column so there is another nested group that can be toggled. When I try to add a child group under the details group it tells me *cannot group inside detail*. Is it not possible to add another group that can be toggled to the report?