I created an Adaptive AEM 6.1 Form and tried to configure Submit Action,
Wanted to select Store Content Action and the JCR path for storage.
But, in the Action Configuration, I don't see a way of configuring the JCR Path. (Attached screen shot).
Tried many templates in the Geometrixx Gov, shipped out of box with the same result.
We try to get some AEM engineering folk to answer your query.
But meanwhile you could see some of the reference article configuring Submit action :-
// it is covering