Django: Delete or empty content of a row in UpdateView - django

Question

I'm looking to delete or empty a specific row in my table/model in my UpdateView. I have a team and employees in the team. I have made an update view that when "yes" is pressed, the team becomes archived. I want to additionally delete or empty the employee's numbers when doing so. How would I approach that?
I know it might be weird, but the idea is that the employee's numbers should be destroyed once the team is archived, while the rest of the data still stands.
Team Model
class Team(models.Model):
slug = models.SlugField(max_length=200)
teamname = models.CharField(max_length=50, help_text="Indtast holdnavn.", null=False, primary_key=True)
is_active = models.BooleanField(default=True)
Employee Model
class Employee(models.Model):
id = models.AutoField(primary_key=True)
slug = models.SlugField(max_length=200)
emp_num = models.IntegerField(help_text="Indtast medarbejderens MA-nummer. (F.eks 123456)")
firstname = models.CharField(max_length=30, help_text="Indtast medarbejderens fornavn.")
lastname = models.CharField(max_length=30, help_text="Indtast medarbejderens efternavn.")
teamname = models.ForeignKey('Hold', on_delete=models.CASCADE, null=True)
UpdateView
My updateView is using team, as its that model I'm updating.
class ArchiveHoldView(UpdateView):
template_name = 'evalsys/medarbejder/archive_hold.html'
model = Team
form_class = ArchiveForm
def archive_view_team_with_pk(self, slug=None):
if slug:
team = Team.objects.get(slug=slug)
else:
team = self.team
args = {'team': team}
return render(self, 'evalsys/medarbejder/archive_hold.html', args)
def get_context_data(self, **kwargs):
context = super(ArchiveHoldView, self).get_context_data(**kwargs)
context['is_active'] = Team.objects.get(slug=self.kwargs.get('slug'))
return context
def get_success_url(self):
return reverse_lazy("evalsys:home")
Update View form
class ArchiveForm(forms.ModelForm):
def save(self, *args, **kwargs):
self.instance.is_active = False
return super(ArchiveForm, self).save(*args, **kwargs)
is_active = BooleanField(required=False, widget=forms.HiddenInput())
class Meta:
model = Team
fields = ['is_active', ]
labels = {'is_active': 'Is Active'}