This capability has been available in R5 for a while now. This capability has been recently used in the paper: - Kapatsila, B., Hindle, A., Stewart, A., & Grisé, E. (2025). [Counting in: A methodological framework for the accessibility assessment of on-demand transit](https://www.sciencedirect.com/science/article/pii/S1077291X25000074). Journal of Public Transportation, 27, 100122.