diff --git a/conf/groupname.json b/conf/groupname.json
index f6fd631..0859186 100644
--- a/conf/groupname.json
+++ b/conf/groupname.json
@@ -1,8 +1,8 @@
 {
-	"op": [{"username": "admin", "password": "1234"}],
+	"op": [{"username": "__ADMINN__", "password": "__PASSWORD__"}],
 	"presenter": [
-		{"username": "mom", "password": "0000"},
-		{"username": "dad", "password": "1111"}
+		{"username": "", "password": ""},
+		{"username": "", "password": ""}
 	],
 	"contact": "username@domain.com",
  	"comment": "Public Conference",
diff --git a/scripts/install b/scripts/install
index 52e2305..d16dd0f 100755
--- a/scripts/install
+++ b/scripts/install
@@ -124,12 +124,10 @@ ynh_add_systemd_config
 #=================================================
 
 cp ../conf/passwd $final_path/data/passwd
-
 ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin" --target_file="$final_path/data/passwd"
 ynh_replace_string --match_string="__PASSWORD__" --replace_string="$password" --target_file="$final_path/data/passwd"
 
-cp ../conf/groupname.json $final_path/groups/$group_name.json
-
+mv ../conf/groupname.json $final_path/groups/$group_name.json
 ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin" --target_file="$final_path/groups/$group_name.json"
 ynh_replace_string --match_string="__PASSWORD__" --replace_string="$password" --target_file="$final_path/groups/$group_name.json"