Hardware > Access Points > Clients

To view the clients connected to a specific Access Point (AP) installed on your network navigate to Hardware > Access Points > Click on an AP Label.

From there navigate to the Clients tab  

On this tab, you can find every client that is currently connected to the AP. It will show the stats such as Data used (Download/Upload) by the client, along with their IP, MAC address, Radio Band, and Wireless health.

You can also view the insights of a specific client by clicking on a Client > View Client.