[Answered ]-Django add custom permission

In the admin panel, I created 2 groups, respectively, and also included users in these groups.

Query these group names by filtering request.user.groups with name__in. Then filter Employee.objects by those results with dept__in.

Note that this assumes the admin group names are named exactly like the Employee.dept field. If not, rename the admin groups to match the Employee.dept field (including capitalization, spaces, etc.).

def employee_list(request):
    groups = [g.name for g in request.user.groups.filter(name__in=['Group1', 'Group2')]
    context = {'employee_list': Employee.objects.filter(dept__in=groups)}

    return render(request, 'employee_register/employee_list.html', context)