This brief guide was developed as part of the Horizon Europe-funded RDA TIGER project. Throughout the course of its lifespan, which ran for three years from 2023-2025, the project ran a total of 12 open calls for support services, travel grants and cascade grants all in support of RDA Working Groups. Key to running these calls was the efficient operation of a Selection Committee. The detailed processes for the scoping and set up of these, as well as links to the relevant documentation (evaluations forms, scoring compilation sheets, etc.) can be found in the relevant RDA TIGER project deliverables: Rettberg, N. (2024). RDA TIGER D6.1 Rules of Operation for the Selection Committee. Zenodo. https://doi.org/10.5281/zenodo.11218371 O'Connor, R., GRAU, N., Saldner, S., Minichiello, F., Lehtsalu, L., & Delipalta, A. (2025). RDA TIGER D6.5: Final quality evaluation report on the RDA TIGER WG services. Zenodo. https://doi.org/10.5281/zenodo.17877446 The points presented below are derived from these reports and the experiences of those who managed and participated in the RDA TIGER project’s Selection Committee. They will be of use to anyone who is tasked with setting up or contributing to the operation of a Selection Committee, whether as part of a Horizon Europe-funded project or other similar initiative.