There are four methods to override the pricing in a bill manually. For this article, we will assume you want the price to go down. Each method is below.
Add an item in the negative to reduce the "Total Charges" on the bill.
Most common scenario: Guest needs a lodging discount
Step 1.) Click ADD button under the booking information.
Step 3.) Click the Add button.
Setup: Ensure that you have a "Lodging Discount" or similar Item setup in Settings → Items
In Settings → Items, you will be able to click the New button and create an item such as "Room Discount," "Lodging Discount," or "Adjustment." Make sure to apply the same taxes to this item as you have applied to the room charges that you wish to discount. You can also attribute them to the same Revenue Account as your room revenue if you wish. You can track these discounts in your Revenue by Item report.
Step 1.) Hover your mouse over the item or "Room." Click to highlight it in blue. Then click the edit button.
Edit the price of one or more line items, including the room rate, to a lower price.
Note that if you adjust the room rate, it will affect your ADR.
Step 1.) Click the Edit button on the right of the booking.
Switch the room reservation into a rate type where the price is less.
Step 2.) In the Edit Booking modal, click the drop-down box under Rate and select a different rate type, such as your generic 15% discounted rate type, military rate, etc. Click Update.
► Related: Managing and creating Rate Types
This is the least common as it does not affect the Total Charges, but it still provides you with a traceable way to reduce the Remaining Balance.
Add a payment onto the bill on behalf of the customer.
Step 1.) In the Payments section, click the green payment icon.
Step 2.) In the Payment popup modal, select a Comp or similar custom payment type from the Payment Type drop down box.
Step 3.) Enter an optional note in the Reference Number field.
Step 3.) Click the Take Payment button to the right of the amount field to post the payment.
Settings → Payment Types. You will be able to create a new custom payment type such as "Comp" or "Admin Adjustment" or similar. You can track these in the Payments by Type report.