diff --git a/installers/install_osm.sh b/installers/install_osm.sh
index e8526a8..5fca648 100755
--- a/installers/install_osm.sh
+++ b/installers/install_osm.sh
@@ -20,7 +20,7 @@
 
 function usage(){
     echo -e "usage: $0 [OPTIONS]"
-    echo -e "Install OSM from binaries or source code (by default, from binaries)"
+    echo -e "Install OSM"
     echo -e "  OPTIONS"
     echo -e "     -h / --help:    print this help"
     echo -e "     -y:             do not prompt for confirmation, assumes yes"
@@ -34,15 +34,16 @@
     echo -e "                     -b tags/v1.1.0     (a specific tag)"
     echo -e "                     ..."
     echo -e "     -a <apt proxy url>: use this apt proxy url when downloading apt packages (air-gapped installation)"
-    echo -e "     -s <stack name> or <namespace>  user defined stack name when installed using swarm or namespace when installed using k8s, default is osm"
+    echo -e "     -s <namespace>  namespace when installed using k8s, default is osm"
     echo -e "     -H <VCA host>   use specific juju host controller IP"
     echo -e "     -S <VCA secret> use VCA/juju secret key"
     echo -e "     -P <VCA pubkey> use VCA/juju public key file"
     echo -e "     -A <VCA apiproxy> use VCA/juju API proxy"
     echo -e "     --pla:          install the PLA module for placement support"
-    echo -e "     --ng-sa:        install Airflow and Pushgateway to get VNF and NS status (experimental)"
+    echo -e "     --old-sa:       install old Service Assurance framework (MON, POL); do not install Airflow and Pushgateway"
+    echo -e "     --ng-sa:        install new Service Assurance framework (Airflow, AlertManager and Pushgateway)  (enabled by default)"
     echo -e "     -m <MODULE>:    install OSM but only rebuild or pull the specified docker images (NG-UI, NBI, LCM, RO, MON, POL, PLA, KAFKA, MONGO, PROMETHEUS, PROMETHEUS-CADVISOR, KEYSTONE-DB, NONE)"
-    echo -e "     -o <ADDON>:     ONLY (un)installs one of the addons (k8s_monitor)"
+    echo -e "     -o <ADDON>:     ONLY (un)installs one of the addons (k8s_monitor, ng-sa)"
     echo -e "     -O <openrc file path/cloud name>: Install OSM to an OpenStack infrastructure. <openrc file/cloud name> is required. If a <cloud name> is used, the clouds.yaml file should be under ~/.config/openstack/ or /etc/openstack/"
     echo -e "     -N <openstack public network name/ID>: Public network name required to setup OSM to OpenStack"
     echo -e "     -f <path to SSH public key>: Public SSH key to use to deploy OSM to OpenStack"