Index: sections-app-util/src/bundle/sections.properties
===================================================================
--- sections-app-util/src/bundle/sections.properties	(revision 132882)
+++ sections-app-util/src/bundle/sections.properties	(working copy)
@@ -161,4 +161,5 @@
 section_close_opendate=Open Date:
 section_open_info=Close sections tool for students until Open Date:
 section_refresh_info=Refresh the page to see the groups after the due date.
-error_date_format=Error with the Date/Time format
\ No newline at end of file
+error_date_format=Error with the Date/Time format
+options_internally_manage_warning=You have choosen an Open Date but you haven't allowed self registration nor self switch so your students won't be able to registrate on their own. Please, review Options configuration.
\ No newline at end of file
Index: sections-app-util/src/bundle/sections_es_ES.properties
===================================================================
--- sections-app-util/src/bundle/sections_es_ES.properties	(revision 132882)
+++ sections-app-util/src/bundle/sections_es_ES.properties	(working copy)
@@ -160,3 +160,4 @@
 section_open_info=Cerrar herramienta grupos para alumnos hasta la Fecha de Apertura..\:
 section_refresh_info=Llegada la hora de apertura, refresque la p\u00e1gina para ver los grupos.
 error_date_format=Error en el formato de la Fecha/Hora
+options_internally_manage_warning= Ha indicado una fecha de apertura pero no ha habilitado del autoregistro de sus alumnos, por lo que no podr\u00e1n apuntarse a los grupos definidos. Por favor, revise las Opciones.
Index: sections-app/src/java/org/sakaiproject/tool/section/jsf/backingbean/OptionsBean.java
===================================================================
--- sections-app/src/java/org/sakaiproject/tool/section/jsf/backingbean/OptionsBean.java	(revision 132882)
+++ sections-app/src/java/org/sakaiproject/tool/section/jsf/backingbean/OptionsBean.java	(working copy)
@@ -125,6 +125,10 @@
 			// Update the open date
 			if (!openSwitch) {this.openDate=null;};
 			getSectionManager().setOpenDate(courseUuid,openDate);
+			//Warn the user to select an option to allow students enroll in sections
+			if (!selfRegister && !selfSwitch && (openDate!=null)){
+			   	JsfUtil.addErrorMessage(JsfUtil.getLocalizedMessage("options_internally_manage_warning"));
+			}			
 		}
 		
 		// TODO Customize the message depending on the action taken