In the configuration, you can indicate services or one-day packages. If a package is indicated, the price will be fixed, while if a service is indicated, the price will be per night. The logical thing would be to create as many services as we have targets for upgrades. For example, if we have the following upgrades: SA -> MP, AD -> MP and SA -> AD, it would be logical to have two services, one for “upgrade to AD regime” and another one for “upgrade to MP regime”, as it is in these services where we can include the photos and information about the regime. The rate indicated in the configuration is used to calculate the price of the upgrade. For example, if the upgrade is from accommodation only to half board, the price difference between the two types of accommodation, for the dates of the booking and for the occupancy, will be shown in the tariff. If there is no price difference between the two packages, the upgrade will not be offered to the guest, i.e. an upgrade with zero price will not be offered. If the upgrade is confirmed, the new regime will be included in the booking, as well as in the possible modifiers. If the booking was not marked as manual, it will be marked as manual and the rate of the “old” regime will be assigned at that moment, both in the “Price (Re)” box and in the possible special services (MEN1, MEN2, PER3, etc.). Finally, the service (or package, although the most logical is a daily service) that we have configured for that upgrade in the “Services” part of the reservation is added. A notification with a red star symbol will also be created, to make it stand out a bit from the rest of the notifications. In the CWM, this option will be displayed (if available) in a new section.