Narrative reporting gives an error on start

NR add in not installing when start the Word document from network
The error looks like that:

This is a permission issue. When on a network location you should add this network location to the list of trusted locations. Note that first you will have to check allow network locations to be added as trusted. Then you will be able to install the add in to this document and start it. More info on how to do that you can find here.