Walkthrough Video:
The Order Fulfillment Settings page allows you to define the operating days, delivery days, and order cut-off times for your products. You will need to review and edit your Order Fulfillment Settings for both Prime and non-Prime products. The settings defined on this page will influence the Delivery Promise shown to customers, as well as the date you are expected to ship your orders.
To change the FBM shipping cut-off times,
1. In Seller Central, go to Settings and click Shipping Settings
2. Under General Shipping Settings, identify the Order Fulfillment Settings section and click Edit
3. Under General Fulfillment Settings, look for Weekend Operation Settings and check the box for Saturday and/or Sunday operations.

4. Save.