diff --git a/controllers/expedientes.py b/controllers/expedientes.py
index 9681d0f..3802bfd 100644
--- a/controllers/expedientes.py
+++ b/controllers/expedientes.py
@@ -12,6 +12,11 @@
 CHUNK_SIZE = 4096
 
 
+def group():
+    group_name=db(db.auth_group.role).select().first()
+    return group_name
+    
+
 @auth.requires_login()
 def index():
     'muestra la grilla y permite la edición de los datos de los expedientes'
@@ -55,7 +60,7 @@ def index():
         ],
         constraints={
             'expediente': (
-                db.expediente.created_by == auth.user.id)},
+                db.expediente.created_by_group == group())},
         linked_tables=LINKED_TABLES,
         buttons_placement='right',
         exportclasses=myexport,
diff --git a/models/db_pydoctor.py b/models/db_pydoctor.py
index c2189c4..8f90587 100644
--- a/models/db_pydoctor.py
+++ b/models/db_pydoctor.py
@@ -170,6 +170,14 @@ def expediente_numero(value, row):
     return anchor
 
 
+def get_group():
+    groups = auth.user_groups
+    if not groups:
+        return None
+    group_ids = [id for id in groups if not groups[id].startswith('user_')]
+    return group_ids[0] if group_ids else None
+    
+
 db.define_table('expediente',
                 Field('numero', length=40,
                       requires=IS_NOT_IN_DB(db, 'expediente.numero'),
@@ -185,6 +193,7 @@ def expediente_numero(value, row):
                 Field('final', 'date', label=T('Fecha fin')),
                 Field('changed_at', 'datetime',
                       update=request.now, readable=False, writable=False),
+                Field('created_by_group', 'reference auth_group', default=get_group(), update=get_group(), writable=False ),
                 auth.signature, migrate=True,
                 format=expediente_format)
 
diff --git a/tests/test_b_expedientes.py b/tests/test_b_expedientes.py
index f0c9f27..77a4096 100644
--- a/tests/test_b_expedientes.py
+++ b/tests/test_b_expedientes.py
@@ -70,3 +70,15 @@ def test_expedientes(page, login):
     # Click text=Enviar
     page.click("text=Enviar")
     # assert page.url == "http://127.0.0.1:8020/OpenLex/expedientes/index/expediente?_signature=9738bd7a4677227cf1a6e2b1ae9a8747b990925a#"
+
+    # Click text=Expedientes
+    page.click("text=Expedientes")
+    # assert page.url == "http://127.0.0.1:8020/OpenLex/expedientes/index"
+
+    # Click a:has-text("Editar")
+    page.click("a:has-text(\"Editar\")")
+    # assert page.url == "http://127.0.0.1:8020/OpenLex/expedientes/index/expediente/edit/expediente/1?_signature=91f6e51c077f52497a3812868aaebf58ff7b18d4"
+
+    # Click text=Enviar
+    page.click("text=Enviar")
+    # assert page.url == "http://127.0.0.1:8020/OpenLex/expedientes/index/expediente?_signature=9738bd7a4677227cf1a6e2b1ae9a8747b990925a#"