Resetting Router to factory settings

Hi guys , i just want to make sure if i am doing it right before i try to reset my router to factory settings. The reason is that it is in a workplace and it runs with UBS accounting system which is connected to mutiple PC with Ethernet cable. And i want to make sure it doesn't affect the Accounting System after i reset the router to facotry settings.

So the question here is : Will it affect the system ? If i am not wrong , the system runs with IP address accordingly. Sorry i am not much a tech guy but yeah.