I have a few admin users in my android app and others are normal users. the mapping between them is one to many i.e. each admin is mapped to one or many users but each user must have only one admin. how can i configure my app so that admin users can send push notifications from their device to the users' device mapped to it.
PS: Mapping between user and admin may change.
i have read about - GCM/FCM. but they don't allow to send push notification from device. nor they provide any mapping as i described.