diff --git a/CHANGELOG.md b/CHANGELOG.md
index de86f1c..c7d1331 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 
+## v1.x
+
+### Features
+* Add the possibility to manage 'xymon' user's groups.
+
 ## v1.0
 
 ### Features
diff --git a/README.md b/README.md
index a25b49b..3ab6dc2 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ Manage Xymon (client) installation and configuration.
 * **xymon_cli_default_conf_path** : Configuration file for `xymon-client` [default : `/etc/default/xymon-client`].
 * **xymon_cli_default_conf_tpl** : Template used to generate the previous config file [default : `etc/default/xymon-client.j2`].
 * **xymon_cli_hostname** : Allow to override default value of CLIENTHOSTNAME var [default : `{{ ansible_fqdn }}`].
+* **xymon_user_groups** : List of 'xymon' user's groups [default : `xymon`].
 * **xymon_cli_service_manage** : If `xymon-client` service should be managed with this role [default : `true`].
 * **xymon_cli_service_name** : `xymon-client` service name [default : `xymon-client`].
 * **xymon_cli_service_enabled** : Set `xymon-client` service available at startup [default : `true`].
@@ -46,6 +47,7 @@ Please see default value by Operating System file in [vars][vars directory] dire
 This role will :
 * Install needed packages to provide `xymon-client`.
 * Manage `xymon-client` configuration and service.
+* Add 'xymon' user to new groups.
 
 ## Development
 
diff --git a/defaults/main.yml b/defaults/main.yml
index 51d6bd6..1909ea8 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -10,6 +10,7 @@ xymon_cli_pkg_state: 'installed'
 xymon_cli_default_conf_path: '/etc/default/xymon-client'
 xymon_cli_default_conf_tpl: 'etc/default/xymon-client.j2'
 xymon_cli_hostname: "{{ ansible_fqdn }}"
+xymon_user_groups: 'xymon'
 
 ## service
 xymon_cli_service_manage: true
diff --git a/tasks/main.yml b/tasks/main.yml
index f268d23..ea0dcdd 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -17,7 +17,7 @@
     - '{{ xymon_cli_pkg_list }}'
   when: xymon_cli_manage
 
-- name: CONFIG xymon-client
+- name: CONFIG xymon-client service
   template:
     src: '{{ xymon_cli_default_conf_tpl }}'
     dest: '{{ xymon_cli_default_conf_path }}'
@@ -28,6 +28,12 @@
   when: xymon_cli_manage
   notify: restart xymon-client service
 
+- name: CONFIG xymon user's groups
+  user:
+    name: xymon
+    groups: '{{ xymon_user_groups }}'
+  notify: restart xymon-client service
+
 ## service
 - name: SERVICE manage '{{ xymon_cli_service_name }}'
   service: