order tab doesnt raise a sales order in the openERP

Hello people. i have created 2 new order tabs which named as Grooming and Surgeries. when i select any laboratory order and save it, a sales order raised in the openERP. but this doesn’t apply to grooming. grooming is a service and same as laboratory ,when you click save a sales order should be generated in the openERP. my question is how can i do this? if someone can give me a idea on how to configure grooming to raise a sales order, that would be great.