Fiverr scriptolution need to Modificat the Script they pay

Fiverr scriptolution need to Modificat the Script they pay process 1.I want a order shall be created (whit out pay anything) at once when customer click on "Contact the seller" and then customer and seller shall have access to the chat, that chat they get permission to after they have paid för a gig (today). 2.I want that the payment shall have their own button and the payment button shall coming up ...to the customer when seller says(click in) ´´I'm finish and have delivery the order/ service/ (GIG)and when customer says ok to the delivered order is delivered the customer shall pay the sum they are agree about (the button goes to the same process as today ...to PayPal)