You are the project manager of a team of twelve people working on an implementation for the company. You and your team are working on deploying Windows 10. Your weekly team meeting is scheduled over the lunch hour on Mondays. Five of your team members fail to show up to your weekly team meetings and are not responsive via email. Your project is behind schedule as you have been trying to chase down these resources for weeks now. Your project sponsor is upset with the delays and escalated this concern to your department Vice President. What steps should you take as a project manager to correct these issues?