This Nodal Protocol Revision Request (NPRR) more thoroughly implements the limits on Fast Responding Regulation Service (FRRS) that can be awarded or provided by restricting self-arrangement from Resources providing FRRS as well as providing rules concerning Real-Time scheduling. NPRR581, Add Fast Responding Regulation Service as a Subset of Regulation Service, added limits of 65 MW to Fast Responding Regulation Up Service (FRRS-Up) and 35 MW to Fast Responding Regulation Down Service (FRRS-Down) but was silent on some implementation details of these limits, namely on self-arrangement in the Day-Ahead Market (DAM) and restrictions on providing the service in Real-Time without an associated DAM award.