There are two ways that can be done.
First, some of our family members can cross to Pakistan, which is a third country, on their tazkiras—their national ID—when they don't have passports, but IRCC keeps telling us that they will be unable to provide biometrics and they be unable to bring us to Canada if we do not cross to Pakistan on a legal passport and visa. Apparently it is difficult for families to get these from the Taliban, so they will face a problem.
Second, you asked whether they can bring the families here and then provide the biometrics. I don't know if they can do that, but we can help them with some family members who would be able to come to Pakistan if they co-operate with us.