A project manager is managing a new development program to automate some technical functions. During project kickoff, the project manager expresses the need for a technical architect to support the project for a moderate amount of time. The project sponsor informs the project manager about an existing technical architect who possesses valuable knowledge but is already assigned at the portfolio level. What engagement model should the project manager use for the technical architect role to ensure project success? Share the existing technical architect so they can be allocated to the current project and other projects. Assign the existing technical architect to solely be dedicated to the current project. Hire a new technical architect who would be solely dedicated to the current project. Hire a new technical architect who would be shared between the current project and other projects