I presume you are referring to the SSID, the name you see when you look for a Wi-Fi connection from your laptop or whatever. This can be changed in the Hub's management.
Enter 192.168.0.1 in the URL of your browser to access the Hub. Then sign in using the User ID and Password on the label at the base of the Hub. Then go to the Wi-Fi page and change the SSID to one of your choice and save it. Do this for both the 2.4GHz and 5GHz . So for example you could set up Smilergirl-2 and Smilergirl-5 ... it's worth adding the 2 and 5 so that you know which channel you are trying to connect to.