HotSpot is configured per interface. Virtual AP and original wireless interfaces are different interfaces from the HotSpot point of view.
VAP provides different SSID and different security-profile for the wireless interface.
Thank you very much for your answer sergejs, …but I am not able to make it work.
We have hotspot1 running on wlan1 (as you can see in the image), and have created a virtual ap on wlan1 named wlan3 intended to be the AP with WPA security.
The problem is that when someone connects to wlan3, the system doesn´t assign him and IP.
I have tried to create a new DHCP Server named server1 (dhcp1 is the server used by the hotspot) to operate on wlan3, but WinBox shows it in red (invalid) ¿does anybody know why?