You are planning your project resources. You know that you need to account for 2 different timing issues, one at the beginning of the project and one at the end. At the beginning you have an issue with when to on board a resource(s). At the end you have the issue of when to release resource(s). Let's assume your project is building a custom house. Identify a few resource roles, identify when in the project phases (plan, design, build, sell, transfer ownership) you would on board and release the resource and why