I bought Time Capsule specifically to back up my computer at work. Only my computer. I completed the steps the best of my knowledge but I got the message, "This device & its network services will be temporarily unavailable. Are you sure you want to contin

I bought Time Capsule specifically to back up my computer at work. Only my computer. There are many computers within my department. I completed the steps the best of my knowledge but was unsure of which option to click. I clicked "I want to create a new wireless network". At the onset the instructions said I needed to connect with an ethernet cable, which I did. But I have no desire to connect to the internet, print from it, or have others access. I did deselect guest options, and I did put in passwords. But at the end of the process I got the message, "This device & its network services will be temporarily unavailable. Are you sure you want to continue."

I was worried this would shut me down and I wouldn't be able to continue to work. I don't necessarily need to connect wirelessly. It is connected via ethernet cable from machine to device.

Can you advise me how to continue? Did I choose the wrong options?