Two parameters needs configuration in the generated code. Here is an example,

var init_room =1;
var init_user ="tom";

"init_user" represents the customer name for single sign-on, and mostly we set variable for init_user to get the customer name from cookies or sessions.

"init_room" represents the department_ID, you can get the department_ID in Department Panel of your admin panel.

Three parameters needs configuration in the generated code. Here is an example,

var button_assign_type = BUTTON_ASSIGN_STAFF;
var pre_staff_id = "operatorb";
var init_user ="tom";

"butto_assign_type = BUTTON_ASSIGN_STAFF" is fixed, which means single sign-on and start a private chat with a specific operator, no need to enter a department and wait in queue.

"Pre_staff_id" represents the operator name, if not available now, the chat will be transferred to an online operator automatically.