I am new to Odoo. I have both Project and Field Service app installed. They both inherit from project.task model. It seems anything I change in Field Service form changes Project form as well (such as moving around the fields or deleting a field). 
Is there a way for me to be able to change the Project app or the Field Service app and not affect the other? The External ID for the form in Field Service is the same as the External ID in Project.

Thanks