diff --git a/apps/assets/api/node.py b/apps/assets/api/node.py
index e5ace021e201128286f833b9b18cc1f4ebaff98b..c159798f3d6a7ae65b195037742bbae3cd416589 100644
--- a/apps/assets/api/node.py
+++ b/apps/assets/api/node.py
@@ -30,10 +30,8 @@ from .. import serializers
 
 logger = get_logger(__file__)
 __all__ = [
-    'NodeViewSet', 'NodeChildrenApi',
-    'NodeAssetsApi',
-    'NodeAddAssetsApi', 'NodeRemoveAssetsApi',
-    'NodeReplaceAssetsApi',
+    'NodeViewSet', 'NodeChildrenApi', 'NodeAssetsApi',
+    'NodeAddAssetsApi', 'NodeRemoveAssetsApi', 'NodeReplaceAssetsApi',
     'NodeAddChildrenApi', 'RefreshNodeHardwareInfoApi',
     'TestNodeConnectiveApi'
 ]
diff --git a/apps/assets/models/node.py b/apps/assets/models/node.py
index 7b5b9dd48979f05ee899dae049c23245e6c0ab88..b75bea86353acb6487a03e367e112d688ec1500d 100644
--- a/apps/assets/models/node.py
+++ b/apps/assets/models/node.py
@@ -64,6 +64,9 @@ class Node(OrgModelMixin):
     def create_child(self, value):
         with transaction.atomic():
             child_key = self.get_next_child_key()
+            print("Create child")
+            print(self.key)
+            print(child_key)
             child = self.__class__.objects.create(key=child_key, value=value)
             return child
 
@@ -120,15 +123,16 @@ class Node(OrgModelMixin):
         return self.get_all_assets().valid()
 
     def is_root(self):
-        root = self.__class__.root()
-        if self == root:
+        print(type(self.key))
+        print(self.key)
+        if self.key.isdigit():
             return True
         else:
             return False
 
     @property
     def parent(self):
-        if self.key == "0" or not self.key.startswith("0"):
+        if self.is_root():
             return self.__class__.root()
         parent_key = ":".join(self.key.split(":")[:-1])
         try:
@@ -155,7 +159,7 @@ class Node(OrgModelMixin):
         if self.is_root():
             root = self.__class__.root()
             return [root]
-
+        print(self.key)
         _key = self.key.split(':')
         if not with_self:
             _key.pop()
diff --git a/apps/assets/templates/assets/asset_list.html b/apps/assets/templates/assets/asset_list.html
index b5e53aaba8c8bf2104ace14dbbdb3b353d292032..01c3259465e59922aff3dbada939ea43acc40847 100644
--- a/apps/assets/templates/assets/asset_list.html
+++ b/apps/assets/templates/assets/asset_list.html
@@ -411,6 +411,8 @@ function initTree() {
         zNodes = data;
         $.fn.zTree.init($("#assetTree"), setting, zNodes);
         zTree = $.fn.zTree.getZTreeObj("assetTree");
+        var root = zTree.getNodes()[0];
+        zTree.expandNode(root);
 		rMenu = $("#rMenu");
 		selectQueryNode();
     });
diff --git a/apps/assets/views/asset.py b/apps/assets/views/asset.py
index 27332319392087fe52f9dce54120ab95e5983139..e6d19b75fa0161159da79931bcd2018e26d2f067 100644
--- a/apps/assets/views/asset.py
+++ b/apps/assets/views/asset.py
@@ -44,7 +44,7 @@ class AssetListView(AdminUserRequiredMixin, TemplateView):
     template_name = 'assets/asset_list.html'
 
     def get_context_data(self, **kwargs):
-        Node.root()
+        print(Node.root().name)
         context = {
             'app': _('Assets'),
             'action': _('Asset list'),
diff --git a/apps/orgs/mixins.py b/apps/orgs/mixins.py
index d7d4b0d230014404ef031def7de879a2d0b512f0..bd5f7f46103408292059d48d72127d58870dc59c 100644
--- a/apps/orgs/mixins.py
+++ b/apps/orgs/mixins.py
@@ -7,7 +7,7 @@ from django.contrib.auth import get_user_model
 from django.forms import ModelForm
 
 from common.utils import get_logger
-from .utils import get_current_org, get_model_by_db_table, set_current_org
+from .utils import get_current_org, set_current_org
 
 logger = get_logger(__file__)
 
@@ -22,23 +22,27 @@ class OrgManager(models.Manager):
         current_org = get_current_org()
         kwargs = {}
 
+        print(">>>>>>>>>> Get query set")
         if not current_org:
             kwargs['id'] = None
         elif current_org.is_real():
             kwargs['org'] = current_org
         elif current_org.is_default():
             kwargs['org'] = None
-        queryset = super().get_queryset().filter(**kwargs)
+        queryset = super(OrgManager, self).get_queryset()
+        queryset = queryset.filter(**kwargs)
+        # print(kwargs)
+        print(queryset.query)
         return queryset
 
     def all(self):
         current_org = get_current_org()
         if not current_org:
-            msg = 'You should `objects.set_current_org(org).all()` then run it'
+            msg = 'You can `objects.set_current_org(org).all()` then run it'
             warnings.warn(msg)
             return self
         else:
-            return super().all()
+            return super(OrgManager, self).all()
 
     def set_current_org(self, org):
         set_current_org(org)
diff --git a/apps/orgs/utils.py b/apps/orgs/utils.py
index ee82fc01e529c97440b6f41c71dbc789bcfa3c9c..9f6098c7780dcbf3d1cca51b0fcbd614ea659b22 100644
--- a/apps/orgs/utils.py
+++ b/apps/orgs/utils.py
@@ -35,10 +35,9 @@ def set_current_org(org):
     setattr(_thread_locals, 'current_org', org)
 
 
-def get_model_by_db_table(db_table):
-    for model in apps.get_models():
-        if model._meta.db_table == db_table:
-            return model
-    else:
-        # here you can do fallback logic if no model with db_table found
-        raise ValueError('No model found with db_table {}!'.format(db_table))
+def set_to_default_org():
+    set_current_org(Organization.default())
+
+
+def set_to_root_org():
+    set_current_org(Organization.root())
diff --git a/apps/users/models/group.py b/apps/users/models/group.py
index 7730c12d025310ab2bd6ccb55d071d7c439f8851..77106e80e29fba1ec4392771b94bbf3197d18857 100644
--- a/apps/users/models/group.py
+++ b/apps/users/models/group.py
@@ -11,7 +11,7 @@ __all__ = ['UserGroup']
 
 class UserGroup(OrgModelMixin):
     id = models.UUIDField(default=uuid.uuid4, primary_key=True)
-    name = models.CharField(max_length=128, unique=True, verbose_name=_('Name'))
+    name = models.CharField(max_length=128, verbose_name=_('Name'))
     comment = models.TextField(blank=True, verbose_name=_('Comment'))
     date_created = models.DateTimeField(auto_now_add=True, null=True,
                                         verbose_name=_('Date created'))
@@ -22,6 +22,7 @@ class UserGroup(OrgModelMixin):
 
     class Meta:
         ordering = ['name']
+        unique_together = ['org', 'name']
         verbose_name = _("User group")
 
     @classmethod