Partially answering my own question, yes, it is possible by just using DeviceActivityReport. But, can the tokens be used for example, to block those apps by the parent? The extension is sandboxed, but I'm pretty sure there is a way.

Can this case be clarified, as it's missing from the documentation: one parent and two child devices. Show FamilyActivityPicker on parent device. I understand that applications from both child devices is shown. What happens with the applications that are common to both devices, e.g. FaceTime? For what device is the token valid?

Hi! Were you able to use Label(:ApplicationToken)? Do you use them in a report extension or app (on child or parent)? For me it shows an empty space.

We are waiting for approval for more than 3 weeks now. No confirmation email after filling the form. Contacting support was not helpful either. Is this to be expected for Family Controls requests?