@COfit 

Hi, I suppose you mean VPN Client function.

After we set up a VPN Client, indeed we need to add necessary devices into the VPN Client device list manually, currently there is no option to add all client devices into the list automatically. 

We will record your feedback and let the related department know about it for further consideration. Thanks a lot for the feedback.

  @COfit 

Hi, are you trying to separate guests devices and IoT devices from other regular devices under main network?

If so, you could consider enabling Guest Network and let guests and IoT devices to the guest network, do not allow the guest network to access the local network.

However, please note that usually IoT devices needs to be managed via App, if your phone is under the main network and IoT device is on guest network, the phone with the App will not be able to manage the IoT device locally, it could only use remote control.