The tool is set up to represent one specific farm and its related location and climate. CFA members can enable a feature that allows to create multiple farms in one account so you can easily switch between them and have assessments in one place. If you are not a member and need to register data from several farms in different regions/countries, consider creating different accounts to reflect the differences in climate. You can also use one test assessment as baseline and see how changing the location and climate in the farm settings under your username actually affect the final results. If the difference is not big enough, it is your decision whether to create different accounts or to make all assessments in one account deciding on one representative location.