Django composite forms - how do I build and save them?

I am trying to build a form that would provide report tracking. Report itself is ProjectReport class that links instances of all available ReportAtoms. Each ReportAtom is a combination of RAGItem (like "Progress", "Risks", "Resources") and RAGMarker ("Green", "Red"):

class ProjectStatus(CoreBase):
    report_project = models.ForeignKey('Project')
    report_items = models.ManyToManyField('RAGReportAtom')
    report_date = models.DateTimeField(default=datetime.now())

class RAGReportAtom(CoreBase):
    item = models.ForeignKey(DicRAGItem)
    marker = models.ForeignKey(DicRAGMarker)
    comments = models.TextField(null=True, blank=True)

class DicRAGItem(DicCoreBase):
    name = models.CharField(max_length=64, unique=True)
    description = models.TextField(null=True, blank=True)
    is_used_for_portfolio = models.BooleanField(default=False)
    is_used_for_project = models.BooleanField(default=True)
    is_used_for_milestone = models.BooleanField(default=True

class DicRAGMarker(DicCoreBase):
    name = models.CharField(max_length=16, unique=True)
    color_code = models.CharField(max_length=7, unique=True)
    icon = models.FileField(upload_to='RAG_SIMPLE_ICONS', null=True, blank=True)

This is how this can be represented graphically:

So what I am trying to do here is basically this:

1. Get list of all available report items (things reported on)


2. Build a form that will display all report items and let users select a marker for each


3. Users can leave comments


4. When form is submitted I create as many report atoms as I ended up having (combinations of items and markers) and a ProjectReport instance that links all them.

Something similar to this:

Is this going to be possible to generate this form with Django.forms and crispy? I am using django rest framework for most forms - perhaps I could make use of this, too?