Creating a new site in another Frappe bench from its UI involves server-side scripting

Can we create a fraape bench and I have created a bench and created a doctype and it has a cause field XYZ, and there is a custom button when I click on that button a new site gets created in the bench, :- how?create a site in another bench from its UI ,

example : A bench inside on doctype and some field one button create site
click on the button and create site in another bench dir like site and inside create in this bench