Here’s the step-by-step guide for changing a WiFi password:

1. Access the router settings – On your web browser, enter the IP address to access the router settings.
2. Log in – Input the router username and password, then log in.
3. Find the wireless settings – Look for a section that says ‘WiFi’ or ‘Wireless’ and select the option to change the settings.
4. Set the new password – Find the field where you can input the new password, then type in the new WiFi password.
5. Save settings – Click 'Save Settings' or 'Apply,' to apply all the changes.