code: def add_workshifter_view(request, semester):
      
      page_name = "Add Workshifter"
  
      existing = [
          i.user.pk for i in WorkshiftProfile.objects.filter(semester=semester)
      ]
      users = User.objects.exclude(
          Q(pk__in=existing) |
          Q(is_active=False) |
          Q(userprofile__status=UserProfile.ALUMNUS)
      )
  
      add_workshifter_forms = []
      for user in users:
          form = AddWorkshifterForm(
              data=request.POST or None,
              prefix="user-{}".format(user.pk),
              user=user,
              semester=semester,
          )
          add_workshifter_forms.append(form)
  
      if add_workshifter_forms and \
         all(form.is_valid() for form in add_workshifter_forms):
          for form in add_workshifter_forms:
              form.save()
          messages.add_message(
              request,
              messages.INFO,
              "Workshifters added.",
          )
          return HttpResponseRedirect(wurl(
              "workshift:manage",
              sem_url=semester.sem_url,
          ))
  
      return render_to_response("add_workshifter.html", {
          "page_name": page_name,
          "add_workshifter_forms": add_workshifter_forms,
      }, context_instance=RequestContext(request))
docs: Add a new member workshift profile, for people who join mid-semester.