We recommend giving some thought to file storage locations before creating the application.
Changing the storage path is possible after the application is created, but it requires all files to be manually moved from the old location to the new path. This does not occur automatically and is not a trivial action.
In complex applications, for example, multiple applications and data groups may link to the same storage location. Identifying which files belong to which data record can be an effortful process and can only be done at the database level by inspecting the references.
As long as you know exactly which files belong to which data group, you can move them to the new path. You must then change the alias, which references the new file storage location, in the properties of the data field.