diff --git a/README.md b/README.md
index d2df1f6..a487c2d 100644
--- a/README.md
+++ b/README.md
@@ -83,4 +83,36 @@ From Sample 2 Site   > Values = 1,2
 
 ## Version 3.1.0
 
-Added controls for default value and parent selection
\ No newline at end of file
+Added controls for default value and parent selection
+
+## Version 3.2.0
+
+AMP artifacts ready-to-deploy available at [3.2.0](https://github.com/keensoft/alfresco-datalist-constraints/releases/tag/3.2.0)
+
+Keywords `[ADD]` and `[REPLACE]` have been added to define the behaviour of a list inside a Site:
+
+* `[ADD]` merges values from global Dictionary list and Site list
+* `[REPLACE]` includes only values from Site list
+
+This keyword has to be included in any place at `Description` field when declaring the list inside a Site.
+
+** Sample scenario **
+
+Datalist definitions
+
+```
+Dictionary Site > Datalist "Options" > Values = 1,2
+Sample 1 Site   > Datalist "Options" (including [ADD] in description) > Values = 3,4
+Sample 2 Site   > Datalist "Options" (including [REPLACE] in description) > Values = 3,4
+Sample 3 Site   > No datalist defined
+```
+
+Values provided by combos 
+
+```
+Outside from a Site  > Values = 1,2
+From Advanced Search > Values = 1,2,3,4
+From Sample 1 Site   > Values = 1,2,3,4
+From Sample 2 Site   > Values = 3,4
+From Sample 3 Site   > Values = 1,2
+```
\ No newline at end of file
diff --git a/datalist-model-repo/pom.xml b/datalist-model-repo/pom.xml
index c8db5a0..d3de917 100644
--- a/datalist-model-repo/pom.xml
+++ b/datalist-model-repo/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>es.keensoft</groupId>
     <artifactId>datalist-model-repo</artifactId>
-    <version>3.1.0</version>
+    <version>3.2.0</version>
     <name>datalist-model-repo Repository AMP project</name>
     <packaging>amp</packaging>
     <description>Manages the lifecycle of the site-props-repo Repository AMP (Alfresco Module Package)</description>
diff --git a/datalist-model-repo/src/main/java/es/keensoft/alfresco/action/webscript/DataListWebScript.java b/datalist-model-repo/src/main/java/es/keensoft/alfresco/action/webscript/DataListWebScript.java
index 0852c75..a75ffb9 100644
--- a/datalist-model-repo/src/main/java/es/keensoft/alfresco/action/webscript/DataListWebScript.java
+++ b/datalist-model-repo/src/main/java/es/keensoft/alfresco/action/webscript/DataListWebScript.java
@@ -28,10 +28,14 @@
 import org.springframework.extensions.webscripts.WebScriptResponse;
 
 import es.keensoft.alfresco.model.DatalistModel;
+import es.keensoft.alfresco.model.DatalistModel.DataListStatus;
 
 public class DataListWebScript extends AbstractWebScript {
 	
-	private static final String JSON_CODE = "code";
+	private static final String REPLACE_DESK_MARK = "[REPLACE]";
+    private static final String ADD_DESC_MARK = "[ADD]";
+    
+    private static final String JSON_CODE = "code";
 	private static final String JSON_VALUE = "value";
 	
 	private static final String DATALIST_CONTAINER_ID = "dataLists";
@@ -71,8 +75,21 @@ public void execute(WebScriptRequest request, WebScriptResponse response) throws
 		            siteId = siteInfo.getShortName();
 		        }
 		    }
-		    if (siteId != null && existsDatalist(siteId, targetedDataListName)) {
-		        sites.add(siteService.getSite(siteId));
+		    DataListStatus siteStatus = DataListStatus.NONE;
+		    if (siteId != null) {
+		        siteStatus = existsDatalist(siteId, targetedDataListName);
+		        switch(siteStatus) {
+        		        case NONE: 
+        		            sites = siteService.listSites(null, DATALIST_PRESET);
+        		            break;
+        		        case ADD: 
+        		            sites = siteService.listSites(null, DATALIST_PRESET);
+        		            sites.add(siteService.getSite(siteId));
+        		            break;
+        		        case REPLACE:
+        		            sites.add(siteService.getSite(siteId));
+        		            break;
+		        }
 		    } else {
 		        sites = siteService.listSites(null, DATALIST_PRESET);
 		    }
@@ -168,18 +185,29 @@ public int compare(Map.Entry<String, String> o1,
 		return sortedMap;
 	}
 	
-	private boolean existsDatalist(String siteId, String targetedDataListName) {
+	private DataListStatus existsDatalist(String siteId, String targetedDataListName) {
 	    
         NodeRef dataListContainer = SiteServiceImpl.getSiteContainer(siteId, DATALIST_CONTAINER_ID, true, siteService, transactionService, taggingService);
         List<ChildAssociationRef> dataListsNodes = nodeService.getChildAssocs(dataListContainer);
         for (ChildAssociationRef dataList : dataListsNodes) {
             if (dataList.getTypeQName().isMatch(ContentModel.ASSOC_CONTAINS)) {
                 if (nodeService.getProperty(dataList.getChildRef(), ContentModel.PROP_TITLE).toString().equals(targetedDataListName)) {
-                    return true;
+                    Object description = nodeService.getProperty(dataList.getChildRef(), ContentModel.PROP_DESCRIPTION);
+                    if (description != null) {
+                        if (description.toString().indexOf(ADD_DESC_MARK) > 0) {
+                            return DataListStatus.ADD;
+                        } else if (description.toString().indexOf(REPLACE_DESK_MARK) > 0) {
+                            return DataListStatus.REPLACE;
+                        } else {
+                            return DataListStatus.REPLACE;
+                        }
+                    } else {
+                       return DataListStatus.REPLACE;
+                    }
                 }
             }
         }
-        return false;
+        return DataListStatus.NONE;
 	    
 	}
 	
diff --git a/datalist-model-repo/src/main/java/es/keensoft/alfresco/model/DatalistModel.java b/datalist-model-repo/src/main/java/es/keensoft/alfresco/model/DatalistModel.java
index 5f1bcc5..53b96f6 100644
--- a/datalist-model-repo/src/main/java/es/keensoft/alfresco/model/DatalistModel.java
+++ b/datalist-model-repo/src/main/java/es/keensoft/alfresco/model/DatalistModel.java
@@ -9,4 +9,8 @@ public class DatalistModel {
 	public static final QName DATALIST_MODEL_VALUE_PROPERTY = QName.createQName(DATALIST_MODEL_URI, "value");
 	public static final QName DATALIST_MODEL_ITEM_TYPE = QName.createQName(DATALIST_MODEL_URI, "optionList");
 	
+	public enum DataListStatus {
+	    ADD, REPLACE, NONE
+	}
+	
 }
diff --git a/datalist-model-share/pom.xml b/datalist-model-share/pom.xml
index aa65a1a..9d7ba13 100644
--- a/datalist-model-share/pom.xml
+++ b/datalist-model-share/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>es.keensoft</groupId>
     <artifactId>datalist-model-share</artifactId>
-    <version>3.1.0</version>
+    <version>3.2.0</version>
     <name>site-props-share AMP project</name>
     <packaging>amp</packaging>
     <description>Manages the lifecycle of the site-props-share AMP (Alfresco Module Package)</description>