Step 1. Check the link on address bar and look for "item=". In the example below "item=project_list"
http://wms.sanlien.com.tw/sanlien_crm/user.php?item=project_list
Step 2. Connect to wms via FTP and navigate to /var/www/html/sanlien_crm/user.php
Step 3. Look for the case "project_list" and locate the file to edit.