Unfortunately, FlexiHub does not work in multi-account systems. It shares a device into the system, not into the user account.
FlexiHub operates as a service. On one machine, only one instance of service can exist and it can be logged into one FlexiHub account. This leads to each user seeing all nodes and all remote USB devices in the system and connecting them.
So, if you plan to use the software in a multi-account system, you need to take into account that each user will not be able to use only their own FlexiHub account.
Isolation of devices in an RDP session is available in USB Network Gate only.