For an on-premises deployment of SigningHub you would need to purchase a perpetual software license of SigningHub. Contact sales to get the SigningHub license.
Configure your SigningHub license file
Click the "Configurations" option from the left menu.
Click the "License" option.
The "License" screen will appear. Click to browse the "license.xml" file on your system.
Click the "Save" button from the screen bottom.
If you want to download your current license file, click the "Download Current License" button.
Click the "Publish Changes" button from the top right corner, to make these configurations effective on the front-end (SigningHub Desktop Web).