The SigningHub for Word add-in installation that is done on a local machine, is called an on-premises installation. It is used when you need to send the Word documents for signing from Microsoft Word installed on your local machine.
Installation Prerequisites
There are two prerequisites to install SigningHub for Word add-in, i.e.:
MS Word 2013 or 2016 should be installed on your local machine.
The operator installing the SigningHub for Word add-in should have the "Read and Write" access on the network location, from where the add-in is required to install.
On premises Installation
You can installthe SigningHub for Word add-in from the Office store on your local machine. However if the direct access to the Office store is disabled in your organisation, you can place its manifest file on a centralised location of your local network. In this way, your enterprise users can access this location to install the SigningHub for Word add-in on their local machines.
So, there are two ways to install SigningHub for Word on your local machine: