The primary difference for program listings under different heads of SRF and YSO is on account of where the project is actually housed. Are you serving with a project that is within an SRF department, or a YSS department, or are we serving a YSO department? Who is administrating or coordinating the project?
For example, the work of the Spanish technology team involves coordination with SRF Membership services. Similarly, some other projects in the translations area will be coordinated by monastics and nuns. Currently the majority of the projects are coordinated by YSO and directed by SRF and serving the goals of SRF.
Some are labeled both because they have volunteer roles in different areas - these labels may be removed.