Custom script for a button

Good Morning Guys
I am a new in Frappe framework and ERP NEXT.
I have a doctype named Estimation , I want to make a button in Estimation doctype to get submitted like in sales order button that get submitted , i want to have an option to click on make quotation like for ex(in quotation make sales order ) what is the script for this


Functionality you are expecting is already available. While submit the quotation

If you need any more customization then you might have to write custom script in the application.