A project manager is having a very difficult time negotiating with a functional manager. The project manager would like to have Peter the system administrator work on the project full time, but the functional manager needs Peter full time to work on the servers throughout the day in case one goes down. After a few days of negotiating the project manager has determined that he will have Mark from Monday to Wednesday and the function of manager can have Mark on Thursday and Friday. While this solution is not the most ideal scenario for the project manager and the functional manager, it will have to work for now. What conflict resolution technique was used