This Technical Brochure explores the integration of Wide Area Monitoring (WAM) and Wide Area Monitoring, Protection, and Control (WAMPAC) systems into decision support tools for control room processes of modern power systems. It highlights the need for synchronised measurement technologies as provided by Phasor Measurement Units (PMU) to observe and control the electrical grid effectively. The brochure discusses various applications and timeframes for decision-making processes using synchrophasor measurements, ranging from real-time control to post-event analysis. By sharing practical experience, it emphasizes the challenges and benefits associated with deploying WAM and WAMPAC systems into standard control room procedures and provides recommendations for areas of further research and development.