Can we use the cloud edition in English (Australia) and the same file be used in Columbia but in Spanish. If so does that mean we can see what the Columbia people have input in English although they will use it in Spanish. Which will also mean they can see the file in Spanish but we have used it in English.
Language must be set for all users. It’s not per-user preference.
In what language would your chart of accounts be? If in English, then everybody should be using the program in English. Otherwise if user is using the program in Spanish language, they are not going to get 100% Spanish language everywhere (e.g. in Chart of accounts)