diff --git a/controllers/plugin_dbui.py b/controllers/plugin_dbui.py
index 155b7e9d160237bdcacc5d7f60968929d6bb657a..955001c0ddbdcf6e7ed7480c9149fb0330d34a6c 100644
--- a/controllers/plugin_dbui.py
+++ b/controllers/plugin_dbui.py
@@ -36,7 +36,7 @@ def index():
 		Load the javascript librairy for the plugin.
 		Define view.
 
-	PARAMETERS WHICH CAN BE SET VIA THE PLUGINMANAGER
+	PUBLIC PARAMETERS WHICH CAN BE SET VIA THE PLUGINMANAGER
 		
 		page_view
 			The page view call by the plugin
@@ -49,7 +49,12 @@ def index():
 		with_grid_filter
 			Add the javascript librairy for gridFilter
 			
-			
+	PRIVATE PARAMETERS
+	
+		combined_fields
+		field_sets
+		wizards
+		
 	OPTIONS
 
 		debug
@@ -68,10 +73,13 @@ def index():
 
 	"""
 	# define plugin parameters and their default value
-	plugins = PluginManager('dbui', 
+	plugins = PluginManager('dbui',
+							combined_fields=None,
+							field_sets=None,
 							page_view='plugin_dbui.html', 
 							script_path='static/plugin_dbui/scripts',
-							with_grid_filter=False)
+							with_grid_filter=False,
+							wizards=None)
 	
 	# paths
 	base = os.path.join(os.path.sep, request.application)
diff --git a/modules/plugin_dbui/__init__.py b/modules/plugin_dbui/__init__.py
index 134995f4f4a21447005c0faff2f7ae70b50e981c..24ae1fbfcf15fdd5da9c7d62ff8e4ff0933cd66a 100644
--- a/modules/plugin_dbui/__init__.py
+++ b/modules/plugin_dbui/__init__.py
@@ -4,3 +4,6 @@
 
 from cfgsvc import CfgSvc
 from dbsvc import DbSvc
+from tools import (define_combined_field,
+				   define_field_set,
+				   define_wizard)
diff --git a/modules/plugin_dbui/tools.py b/modules/plugin_dbui/tools.py
new file mode 100644
index 0000000000000000000000000000000000000000..d5950db2d3f4cf2508a186f986d386e652a9afc8
--- /dev/null
+++ b/modules/plugin_dbui/tools.py
@@ -0,0 +1,51 @@
+""" $Id$
+	Author: R. Le Gac
+"""
+
+__version__ = "$Revision$"
+
+from gluon.tools import PluginManager
+
+
+def define_combined_field():
+	""" Helper tool to define combined fields in form.
+	
+	"""
+	plugins = PluginManager()
+	plugins.dbui.combined_fields = {}
+
+
+def define_field_set(title, table, fields, **extjs):
+	""" Helper tool to define fieldSet in form.
+			title
+				title of the fieldset
+
+			table
+				name of the table
+
+			fields
+				list of field name belonging to the table
+
+			extjs
+				Ext JS configuration parameters
+				See the documentation of Ext.form.FieldSet
+	
+	"""
+	plugins = PluginManager()
+	plugins.dbui.field_sets = {}
+
+	if table not in plugins.dbui.field_sets:
+		plugins.dbui.field_sets[table] = []
+	
+	di = {'title': title, 'fields': fields}
+	di.update(**extjs)
+
+	plugins.dbui.field_sets[table].append(di)
+
+
+def define_wizard():
+	""" Helper tool to define wizard in form.
+	
+	"""
+	plugins = PluginManager()
+	plugins.dbui.wizards = {}