In order to edit the reservation price manually open the reservation window. All prices changed manually by a user will change the color to red.
Edit total of the reservation
In Overview tab click the Edit Prices button.
You will see a small pop-up window where you can put the Total Reservation price. Click OK in order to apply the changes.
Edit price per person per night
In the same tab, in the detailed view, you can change also the price per person per night:
Edit prices per room type or guest
In the room type view you can also change the price per guest or per room type:
Remember to save the changes!