# Common Functions

These are standard features that can be used as-is across any campaign, depending on the requirement, with minimal configurations, and can be shared with other products/services as well.

Click on the links below to learn more:

* [Manage Users](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/manage-users)
* [Scan 2D Voucher](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/scan-2d-voucher)
* [Proximity-Based Search](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/search-using-proximity-scanning)
* [Voucher-Based Registration and Distribution](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/registration-and-distribution-voucher-based)
* [Track Beneficiary Referrals](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/track-beneficiary-referrals)
* [Track Side Effects for Beneficiaries](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/track-side-effects)
* [Track Adverse Events](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/track-adverse-events)
* [Health Facility Referral ](https://docs.digit.org/health/access/public-health-product-suite/health-campaign-management-hcm/hcm-user-manual/common-functions/track-referrals)


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