To put a Virgin Media Business router (hereafter referred to as Hitron) into Modem mode, you can follow the link from Virgin Media's website below:
How do I put my Virgin Media Hitron router into modem modeThe alternative way if you are unsure is to contact Virgin themselves, in which their staff will be able to do it for you!
If you need any further help today, please don't hesitate to contact our friendly support team on 0330 122 6000 or by email!