Wifi for one Guest only?

Is this possible? Could I simply use a USB dongle and set it up from within the Guest?
You could try to use USB passthrough but that is emulated so not great for bandwidth or latancy and it isn't as stable as a full USB controller passed through using PCI passthrough as the guest doen't get direct/physical access to that Wifi Dongle.
 
This is a remotely deployed computer that is connected to a private network (no internet). I wanted to create a wireless access point so when I am there for maintenance, I could use the AP to connect to the network with my phone and/or laptop. Performance is therefore not overly critical as the AP would only be used when I am physically there
 
This is a remotely deployed computer that is connected to a private network (no internet). I wanted to create a wireless access point so when I am there for maintenance, I could use the AP to connect to the network with my phone and/or laptop. Performance is therefore not overly critical as the AP would only be used when I am physically there
then yes, it should be doable with USB passthrough.
you can attach the wifi dongle and then on the webgui select your VM's "Hardware" tab, click "Add" and select USB port or device that you'd like to use in the VM.
 
That does seem to work however I was hoping to use the Wifi (wls16) as an AP to access the ethernet connection (ens18). Seems all it does is create an interface named "br0" that is still the wired ethernet connection.