Upload..
Used to upload your license file to the SQL Server that you wish to access. The license information will be used by all the client computers that connect to this server unless a database license file is being used.
Change..
Used for a temporary change of license file, when a dealer visits you, for example, and has brought his or her own license file on a diskette (to be able to use C/AL permissions). This function ensures that the change is not saved the next time you start the program, and your old license file is used. You must be sure to use this if you want to work using the demonstration license file cronus.flf, otherwise you may overwrite your own license file.