> ## Documentation Index
> Fetch the complete documentation index at: https://sailia-mintlify-intercom-migration-1775528819.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Add-ons

> Offer optional extras that customers can purchase alongside activity bookings.

Add-ons are optional extras that customers can purchase alongside an activity booking. Use them for equipment hire, photography packages, meal upgrades, or any supplementary product tied to an activity.

## How add-ons work

1. You create an add-on and link it to one or more activities.
2. During checkout, customers see the available add-ons for their selected activity.
3. They choose which add-ons to include and the quantity.
4. The add-on cost is included in the order total.

## Create an add-on

<Steps>
  <Step title="Open add-on settings">
    Navigate to your activities section and open the add-ons area, or go to a specific activity's settings.
  </Step>

  <Step title="Create the add-on">
    Enter a name, description, and price for the add-on.
  </Step>

  <Step title="Choose the pricing model">
    Select whether the add-on is charged **per person** or **per booking**:

    | Model           | How it works                                                                                                 |
    | --------------- | ------------------------------------------------------------------------------------------------------------ |
    | **Per person**  | The price is multiplied by the number of participants. A £5 per-person add-on for a group of 4 costs £20.    |
    | **Per booking** | A flat charge regardless of group size. A £10 per-booking add-on costs £10 whether one person or ten attend. |
  </Step>

  <Step title="Link to activities">
    Assign the add-on to the activities where it should appear. An add-on can be linked to multiple activities.
  </Step>
</Steps>

## Add-ons in the checkout flow

When a customer selects an activity that has add-ons, the add-on options appear during the booking process. Customers can:

* Select which add-ons they want
* Choose quantities where applicable
* See the updated total before completing payment

<Tip>
  Keep add-on names short and descriptive. Customers see them inline during checkout, so clarity helps them make quick decisions.
</Tip>

## Add-ons for group bookings

For [group bookings](/activities/group-bookings), the pricing model matters:

* **Per-person add-ons** are multiplied by the number of participants in the group
* **Per-booking add-ons** are charged once regardless of group size

This lets you offer things like a group photo (per booking) alongside individual equipment hire (per person).

## Discounts on add-ons

[Discount codes](/pricing/discount-codes) can be configured to apply to add-ons. When creating a discount, enable **Add-ons** under product eligibility. The discount applies to the add-on line items in the basket.

<Note>
  Auto-apply discounts do not support add-ons. Only manually entered discount codes can apply to add-on products.
</Note>

## Accounting

If you use [Xero accounting sync](/integrations/accounting-sync), assign an accounting category to each add-on. This determines how add-on revenue is categorized on Xero invoices, including the correct VAT rate and account code.

## Membership add-ons

Add-ons can also be attached to [membership plans](/pricing/memberships-and-passes#membership-add-ons). Membership add-ons work differently from activity add-ons — they are billed as part of the membership subscription rather than as a one-time checkout item.

## Related guides

<Columns cols={2}>
  <Card title="Activities" icon="calendar" href="/activities/activities">
    Create activities and configure add-ons.
  </Card>

  <Card title="Group bookings" icon="users" href="/activities/group-bookings">
    How add-ons work with group bookings.
  </Card>
</Columns>