Implementation of method determining master equation coefficient of an ensemble of two-level emitters coupled to a waveguide mode presented in Svendsen, Mathias B. M. and Olmos, Beatriz, Modified dipole-dipole interactions in the presence of a nanophotonic waveguide, Quantum 7, 1091 (2023), doi = 10.22331/q-2023-08-22-1091.