CVi的答案做了一些小的调整，但对于我的用例，我真的希望另一个多选小部件来管理组中的用户，就像管理组权限的多选一样。
以this answer为灵感，我得出了以下结论：

from django import forms
from django.contrib import admin
from django.contrib.auth.admin import GroupAdmin as origGroupAdmin
from django.contrib.auth.models import Group, User

class GroupAdminForm(forms.ModelForm):
    """
    ModelForm that adds an additional multiple select field for managing
    the users in the group.
    """
    users = forms.ModelMultipleChoiceField(
        User.objects.all(),
        widget=admin.widgets.FilteredSelectMultiple('Users', False),
        required=False,
        )

    def __init__(self, *args, **kwargs):
        super(GroupAdminForm, self).__init__(*args, **kwargs)
        if self.instance.pk:
            initial_users = self.instance.user_set.values_list('pk', flat=True)
            self.initial['users'] = initial_users

    def save(self, *args, **kwargs):
        kwargs['commit'] = True
        return super(GroupAdminForm, self).save(*args, **kwargs)

    def save_m2m(self):
        self.instance.user_set.clear()
        self.instance.user_set.add(*self.cleaned_data['users'])

class GroupAdmin(origGroupAdmin):
    """
    Customized GroupAdmin class that uses the customized form to allow
    management of users within a group.
    """
    form = GroupAdminForm

# Register the modified GroupAdmin with the admin site
admin_site = admin.AdminSite(name='my_admin')
admin_site.register(Group, GroupAdmin)

我不确定这是否是您要查找的内容，但您可以对ModelAdmin for Group进行如下修改（您admin.py的应用的www.example.com）：

from django.contrib.auth.admin import GroupAdmin
from django.contrib.auth.models import Group
admin.site.unregister(Group)

class UserInLine(admin.TabularInline):
    model = Group.user_set.through
    extra = 0

@admin.register(Group)
class GenericGroup(GroupAdmin):
    inlines = [UserInLine]

Code based on this answer
现在，您可以根据需要编辑内联。
我不认为这正是你正在寻找的，但它是一个快速和肮脏的修复，得到的工作完成。

• 免责声明：我不知道这是否是 Django 认可的做事方式，但我相信这并不遥远。*