Doris, the project manager, is overseeing a technical project that requires basic knowledge of a certain application. Two developers on the team want to learn the application, and ask Doris to send them on a week-long training session. Doris determines that sending both resources to this training would harm the project schedule. The schedule will only allow one team member to attend the training. Doris needs to mitigate this situation to keep the project on track. She wants to allow both individuals to work with her to come up with a decision on who will attend the training. Which conflict resolution technique should she use