diff --git a/prospect.py b/prospect.py
index 3a957ee..a0c0e3c 100644
--- a/prospect.py
+++ b/prospect.py
@@ -20,11 +20,26 @@ class Prospect(ModelSQL, ModelView):
                            domain=[If(Eval('department'),
                                     ('parent', '=', Eval('department')))])
 
+    assigned_operator = fields.Many2One('res.user', "Assigned operator")
+
+    state = fields.Selection([
+        ('unassigned', 'Unsassigned'),
+        ('assigned', 'Assigned')], "State", readonly=True)
+
+    @classmethod
+    def default_state(cls):
+        return 'unassigned'
+
     @fields.depends('city', 'department')
     def on_change_city(self):
         if self.city:
             self.department = self.city.parent
 
+    @fields.depends('assigned_operator', 'state')
+    def on_change_assigned_operator(self):
+        if self.assigned_operator:
+            self.state = 'assigned'
+
 
 class ContactMethod(ModelSQL, ModelView):
     'Mecanismo de contacto'
diff --git a/prospect.xml b/prospect.xml
index 574c4c4..079735f 100644
--- a/prospect.xml
+++ b/prospect.xml
@@ -36,6 +36,73 @@ this repository contains the full copyright notices and license terms. -->
             id="menu_prospects_tree"
             action="act_prospect_tree"/>
 
+	<record model="ir.action.act_window" id="act_prospect_unassigned_tree">
+            <field name="name">Unassigned</field> 
+            <field name="res_model">sale.prospect</field>
+	    <field name="domain" eval="[('state', '=', 'unassigned')]" pyson="1"/>
+        </record>
+
+        <record model="ir.ui.view" id="prospect_unassigned_view_tree">
+            <field name="model">sale.prospect</field> 
+            <field name="type">tree</field>
+            <field name="name">prospect_tree</field>
+        </record>
+        <record model="ir.ui.view" id="prospect_unassigned_view_form">
+            <field name="model">sale.prospect</field> 
+            <field name="type">form</field>
+            <field name="name">prospect_form</field>
+        </record>
+
+        <record model="ir.action.act_window.view" id="act_prospect_unassigned_tree_view1">
+            <field name="sequence" eval="10"/>
+            <field name="view" ref="prospect_unassigned_view_tree"/>
+            <field name="act_window" ref="act_prospect_unassigned_tree"/>
+        </record>
+        <record model="ir.action.act_window.view" id="act_prospect_unassigned_form_view1">
+            <field name="sequence" eval="20"/>
+            <field name="view" ref="prospect_view_form"/>
+            <field name="act_window" ref="act_prospect_unassigned_tree"/>
+        </record>
+
+	<menuitem
+            parent="menu_prospects_tree"
+            sequence="10"
+            id="menu_prospects_unassigned_tree"
+            action="act_prospect_unassigned_tree"/>
+
+	<record model="ir.action.act_window" id="act_prospect_assigned_tree">
+            <field name="name">Assigned</field> 
+            <field name="res_model">sale.prospect</field>
+	    <field name="domain" eval="[('state', '=', 'assigned')]" pyson="1"/>
+        </record>
+
+        <record model="ir.ui.view" id="prospect_assigned_view_tree">
+            <field name="model">sale.prospect</field> 
+            <field name="type">tree</field>
+            <field name="name">prospect_tree</field>
+        </record>
+        <record model="ir.ui.view" id="prospect_assigned_view_form">
+            <field name="model">sale.prospect</field> 
+            <field name="type">form</field>
+            <field name="name">prospect_form</field>
+        </record>
+
+        <record model="ir.action.act_window.view" id="act_prospect_assigned_tree_view1">
+            <field name="sequence" eval="10"/>
+            <field name="view" ref="prospect_assigned_view_tree"/>
+            <field name="act_window" ref="act_prospect_assigned_tree"/>
+        </record>
+        <record model="ir.action.act_window.view" id="act_prospect_assigned_form_view1">
+            <field name="sequence" eval="20"/>
+            <field name="view" ref="prospect_view_form"/>
+            <field name="act_window" ref="act_prospect_assigned_tree"/>
+        </record>
+
+	<menuitem
+            parent="menu_prospects_tree"
+            sequence="10"
+            id="menu_prospects_assigned_tree"
+            action="act_prospect_assigned_tree"/>
 
         <record model="ir.action.act_window" id="act_contact_method_tree">
             <field name="name">Contact method</field> 
@@ -64,4 +131,4 @@ this repository contains the full copyright notices and license terms. -->
             <field name="act_window" ref="act_contact_method_tree"/>
         </record>
     </data>
-</tryton>
\ No newline at end of file
+</tryton>
diff --git a/tests/scenario_sale_opportunity_management.rst b/tests/scenario_sale_opportunity_management.rst
index e5c9fca..75de79f 100644
--- a/tests/scenario_sale_opportunity_management.rst
+++ b/tests/scenario_sale_opportunity_management.rst
@@ -74,11 +74,19 @@ Verificar estado final de creación de prospecto::
     'CO-05001'
     >>> prospect.department.code
     'CO-05'
+    >>> prospect.state
+    'unassigned'
 
+Asignar operario a un prospecto::
+    >>> User = Model.get('res.user')
+    >>> user,  = User.find([('name', '=', 'Administrator')])
+    >>> prospect.assigned_operator = user
 
-
-
-
+    >>> prospect.assigned_operator.name
+    'Administrator'
+    >>> prospect.state
+    'assigned'
+  
 ------------------------------------
 Asignación de prospectos a operarios
 ------------------------------------
@@ -242,4 +250,4 @@ Reportes
 
 * Reporte de prospectos potenciales
     * llamadas con un nivel de interés alto
-    * Seguimiento de prospecto al que pertenecen las llamadas
\ No newline at end of file
+    * Seguimiento de prospecto al que pertenecen las llamadas