In the menu on the left hand side of HOME, the "Files" command guide you to HOME local data repository for license files, LUT definitions, etc.
For some functionality, HOME requires data from external, which usually is provided through a file exchange, e.g. between Lawo and a customer.
License files (*.lic), for example, will be sent to a customer following an order. These files can be uploaded using the upload button, which opens a dialogue to pick a file.