How to include fields from the inherited model in the form?

Question

Django

The question is partly related to this topic: How to access model B which inherits from A?
I want to display a form of model A (main model) with fields from model B (which inherits from A).
At the moment, fields from model B are displayed in the form, but they do not display or save data from model B. If I change the form in view to model B, then everything works, but this method does not suit me.
As far as I understand, the easiest way is to display two forms from different models inside the same form tag, add different prefixes to them and save them separately. What say developers?