As part of recent Fleet Manager installation, it transpired that it can only make use new VNET and subnet subsequently. How about if we are to leverage existing VNET that the organisation has already?
Also, IP address of Fleet Manager is chosen as first IP of that subnet provided in ARM template. Per my understanding, the following points need to be looked into and they are as follows.
If we set up network before Fleet Manager installation, it would be more friendly to an Azure architect.