RDS Cal question

[jonathan.lees]

Not sure if this is the right place to ask but anyways... So we never had any of our teachers/slt remote into school, no real need since they accessed SIMS via PARS (web based) and we store files in O365 sharepoint. But since lockdown all of a sudden they want remote access. So without the right tools or budget I quickly implemented a solution where using our Sophos XG they VPN in and locked down to a specific VLAN for security and once authenticated and connected I had them remote desktop to their physical workstations. This worked well, but the machines had to be powered on during the day, no real concerns there. Since though we've fired up an old server and added an SSD and some more RAM and created some Win 10 VMs to HYper V. But I'm not sure where I stand on this with regards to RDS Cals, do we need them ? We just have a standard OVM and hyper V is licenced based on the number of CPU cores and not the number of VMs..