implementing checkboxes with multiple select in django admin and modelform?

I'm fairly new to Django, so I couldn't find a way to implement checkboxes with multiple select in to my custom modelforms and Django admin. I tried the Django docs, but still couldn't find a solution. TIA

views.py:

class ProjectCreate(CreateView):
    model = Project
    fields = ['projectid', 'title', 'description', 'startdate', 'enddate', 'cost', 'Project_type',
              'employeeid', 'technologies', 'clientid', 'document']

class ProjectUpdate(UpdateView):
    model = Project
    fields = ['projectid', 'title', 'description', 'startdate', 'enddate', 'cost', 'Project_type',
              'employeeid', 'technologies', 'clientid']

form-template.py:

{% for fields in form %}
<div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
        <span class="text-danger small">{{ fields.errors }}</span>
    </div>
    <label class="control-label col-sm-2">{{ fields.label_tag }}</label>
    <div class="col-sm-10">{{ fields }}</div>
</div>
{% endfor %}

We can implement is using django-multiselectfield

1. First install django-multiselectfield.

pip install django-multiselectfield

2. In Models.py, we need to import multiselectfield then use MultiSelectField as modal field & pass required arguments.

   from django.db import models
   from multiselectfield import MultiSelectField
   
   MY_CHOICES = ((1, 'Value1'),
                 (2, 'Value2'),
                 (3, 'Value3'),
                 (4, 'Value4'),
                 (5, 'Value5'))
   
   #choices can be a list also
   
   class MyModel(models.Model):
   
       #....
   
       my_field = MultiSelectField(choices=MY_CHOICES,
                            max_choices=3,
                            max_length=3)
   

Now in admin panel when you open MyModel form you will see 5 check boxes out of which you can only select a maximum of 3 as defined max_choices=3

If you are rendering modelform using templates then you only need to specify the fields in Forms.py.

If you're getting dropdown data from another table then refer to this question