Step 1: Download Business Assist GST Woocommerce API plugin from http://www.oscprofessionals.com/wordpress-plugin/business-assist-GST
Step 2: Install and configure it with your WordPress woocommerce store
Step 3: Download Business Assist app from Google Play store
Step 4: Take URL and Key from WordPress admin and add to Business Assist app
Step 5 :User can login in mobile by selecting one of users details from admin
Step 6: You are ready to use!