How can I change the PTCL wifi router password?

I have a PTCL broadband connection which is connected to a WiFi router, and I need to change the wifi router password. Please can forum members guide me on how to change the password.

Thank you.

You need to open your browser and in the address bar type In the username and password field put the details as you previously entered or admin for both. Once logged in go to the tab which states wireless and then select security. You need to now set the network authentication as WPA-PSK, and type in your required password and save the settings.