# Subjects and the SV Pool

The Source Verification Pool of Subjects (SV Pool) is a collection of subjects. The subjects identified for source verification at a site are managed in the SV Pool. You can add subjects to this collection either manually or through an auto-selection process.

- Manual subject selection
  - Add subjects one at a time, or import an externally created list of subjects.

    For more information, see Manually selected subjects and Imported subjects.

  - Exclude individual subjects.

    For more information, see Excluded subjects.

- Automatic subject selection

  Subjects are automatically selected based on an SV Target Rate (% of subjects) that you define and change as needed throughout the study. For more information, see Configuring Partial SV.

The InForm application manages both the manually selected and automatically selected subjects identically with the exception that the manually selected subjects do not count as part of the SV Target Rate calculation.

Note: All subject pools are managed at the site level.

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