The document outlines configurations for multi-user real-time Hardware-in-the-Loop (HIL) and Rapid Control Prototyping (RCP) laboratories, highlighting flexible, scalable solutions capable of simulating a wide range of power systems from microseconds to milliseconds. It discusses the need for varying computational capabilities and integration of different simulation tools, including EMTP and phasor-mode solvers, to accommodate various research requirements. Additionally, it provides details on system architecture, performance specifications, and optical fiber link configurations to enhance communication and minimize latency in simulations.