# Enrollment Extensions

Use extension products and mappings to extend existing enrollments rather than creating new ones.

## Concepts

* Extension product: A product marked as `Extension only` that targets a mapped NexPort item which supports extension.
* Approval method: Manual vs automatic approval before an extension is processed.
* Threshold behavior: Under certain thresholds, the system may use the time limit rather than extension duration when resetting enrollments.

## Setup

1. Mark the product as `Extension only` (or allow extensions) in product settings.
2. In the mapping, enable extension behavior for the target NexPort item.
3. Choose the approval method and any thresholds required by your program.

## Operations

* Manual approval requires an admin to approve the extension before it is applied.
* Verify extension outcomes in the learner’s enrollment details.

## Related

* [NexPort Mapping](/nexport-user-documentation/nexport-market/admin-guide/running-your-store/nexport-mapping.md)
* [Orders & Fulfillment](/nexport-user-documentation/nexport-market/admin-guide/running-your-store/orders.md)


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