# Checkout delivery lock, shipping charges & weekly cut-offs

## Checkout Delivery Lock

Keeps the delivery option at checkout the same as the method chosen on the product page.

- **Enforce the product-page delivery method at checkout**: customers can't switch Express Post to Pickup, or mix methods between rental items.
- **If the delivery lock fails, show all delivery and pickup options**: prevents an empty delivery step at checkout.
- **Checkout option titles (optional)**: leave blank to allow any Shopify rate of that type, or add titles to restrict the lock to specific rates or pickup locations.

The status shows **Active**, **Disabled**, **Needs permission approval** or **Needs repair**. If asked, click **Approve app permissions**.

## Shipping charge for split deliveries

When rental and buy items ship separately, choose how shipping is charged:

- **Split shipping: charge every shipment**: Keeps the first Shopify shipping charge and adds your set amount for each extra rental date range.
- **Charge the most expensive shipment only**: Keeps the highest shipping rate and discounts the cheaper ones.

This works on Basic Shopify by adding a clearly labelled cart charge the buyer approves.

## Shopify POS charges

Set the amount added once to the Shopify POS cart for each delivery method. Enter 0 for no charge. [POS guide](https://thedressrentalapp.com/docs/pos)

## Weekly booking cut-off

Useful for postage runs. Tick **Enable weekly booking cut-off**, then set:

- **Apply to delivery options and pickup locations**: which methods it affects.
- **Cutoff day** and **Cutoff time**: when the cut-off happens each week.
- **Block bookings through**: after the cut-off, dates up to this day are blocked.
- **Customer message**: explains the cut-off on the product page.

Source: https://thedressrentalapp.com/docs/delivery-checkout