If you want to check Browsing History on WiFi Router, you the default gateway of the router, a browser, and router's credentials. Check this post to know how to do the same.

Many routers don't have this option because they're managed through a mobile app. If that's how your router works, the option to clear the history might be available in the app. Click Advanced.

If you want to change almost any setting to do with your wifi, you'll need to log into your router first. Here's how to do it.

Then turn off Wi-Fi on any others so that you don't connect to the internet with a plug, like your phone, tablet and computer. Then, check your router to see if there's any activity happening.