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## Resource: Sample Flows

## Article: Sample Flows

## Article Link: https://dev.wix.com/docs/api-reference/business-solutions/bookings/policies/booking-policies/sample-flows.md

## Article Content:

# Booking Policies API: Sample Use Cases and Flows

This article shares some possible use cases you could support, as well as
a sample flow that could support each use case. This can be a helpful jumping
off point as you plan your implementation.

## Assign a booking policy to an existing service

You could allow the business owner to assign a booking policy to one of
their services.

To assign a booking policy to a service:

1. Call *Query Services*
   ([SDK](https://dev.wix.com/docs/sdk/backend-modules/bookings/services/query-services.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/bookings/services/services-v2/query-services.md))
   to retrieve all relevant services and display them to the business owner.
   Make sure to save `id` and `revision` of the service for which the owner
   wants to change the booking policy.
1. Call *Query Booking Policies*
   ([SDK](https://dev.wix.com/docs/sdk/backend-modules/bookings/booking-policies/query-booking-policies.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/bookings/policies/booking-policies/query-booking-policies.md))
   to retrieve all relevant booking policies and display them to the owner. Let
   them pick one and save the `bookingPolicy.id`.
1. _Optional_: Allow the owner to create a new policy if they can't find a policy
   that meets all their needs by calling *Create Booking Policy*
   ([SDK](https://dev.wix.com/docs/sdk/backend-modules/bookings/booking-policies/create-booking-policy.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/bookings/policies/booking-policies/create-booking-policy.md))
   Let the owner input all relevant parameters for the policy and save the ID
   of the new policy.
1. Call *Update Service*
   ([SDK](https://dev.wix.com/docs/sdk/backend-modules/bookings/services/update-service.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/bookings/services/services-v2/update-service.md))
   and provide `service.id`, `service.revision`, and `service.booking.policy.id`.

## Change the default policy

You could allow the business owners to set a new default booking policy for their site.

To change the default policy:

1. Call *Query Booking Policies*
   ([SDK](https://dev.wix.com/docs/sdk/backend-modules/bookings/booking-policies/query-booking-policies.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/bookings/policies/booking-policies/query-booking-policies.md))
   to retrieve all relevant booking policies and display them to the business
   owner. Let them choose a policy and save its ID.
1. _Optional_: Allow the owner to create a new policy if they can't find a policy
   that meets all their needs by calling *Create Booking Policy*
   ([SDK](https://dev.wix.com/docs/sdk/backend-modules/bookings/booking-policies/create-booking-policy.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/bookings/policies/booking-policies/create-booking-policy.md)).
   Let the owner input all relevant parameters for the policy and save the ID
   of the new policy.
1. Call *Set Default Booking Policy*
   ([SDK](https://dev.wix.com/docs/sdk/backend-modules/bookings/booking-policies/set-default-booking-policy.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/bookings/policies/booking-policies/set-default-booking-policy.md))
   and pass the relevant `bookingPolicy.id`.