I have a content type called Jobs.
This include a field contact which is user reference.
I have another content type called Job application.
This includes a node reference based on Jobs and field contact which is user reference.
I want when a user selects a job in the node reference select list on the job application form to automatically change the contact field in that form which the value that exists in the contact field for the relevant job selected.
Example: Job: Educator contact: Michael
On Job application upon selected the job "educator" the user reference field should automatically take the value Michael.
Any ideas on how to solve this? Would Rules work and if so how? If through programming, is there a module that allows for injecting code for content types?
Preferably I am looking for a solution that does not involve programming.