3👍
In your form class, you can specify a custom queryset for the group-field, which then determines which Group-instances are available in the form:
class UserForm(forms.ModelForm):
# override the default groups field
groups = forms.ModelMultipleChoiceField(
queryset=Groups.objects.filter(YOUR_CONDITIONS),
widget=forms.SelectMultiple,
)
class Meta:
model = User
Source:stackexchange.com